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Ram 1500 · Model year 2021

2021 Ram 1500 specs, maintenance & manuals

Everything the manufacturer published about the 2021 Ram 1500 in one place: the factory spec sheet, the maintenance schedule, fluid capacities and 14 manufacturer publications, and towing ratings up to 12,750 lb.

Max towing
12,750 lb
Horsepower
260–702 hp
Combined MPG
12–26
Recalls
15
2021 Ram 1500 towing capacity: up to 12,750 lbAll 50 configurations by cab, bed, engine and axle ratio.See the 2021 towing chart

What changed for the 2021 Ram 1500

What the manufacturer's data shows changed on the 2021 Ram 1500 compared with 2020.

All the differences we found (1 more highlights plus full equipment lists)
  • Body size: width is 82.1 / 88 in. (was 82.1 in.).

Newly standard

  • Active Features: Lane Departure Warning-Plus — Rebel

Newly available

  • Active Features: Lane Departure Warning-Plus — Tradesman, Big Horn/Lone Star
  • Radios: Uconnect 12-in. radio — Big Horn/Lone Star, Rebel

Listed for the first time on the equipment chart

  • Active Features: Head-Up Display — optional: Big Horn/Lone Star, Rebel, Laramie, Laramie Longhorn, Limited
  • Active Features: Trailer Reverse Steering Control — optional: Tradesman, Big Horn/Lone Star, Rebel, Laramie, Laramie Longhorn, Limited

Compared automatically from the manufacturer's trim feature charts, specification sheets, towing guides and the EPA's fuel-economy data for 2020 and 2021. The manufacturer reorganized this year's equipment chart, so features can't be matched line by line with last year's; trims, packages and powertrains above are still compared. Equipment varies by trim and market; confirm details on a specific vehicle.

2021 Ram 1500 specs & features

Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2021 specification sheets.

Spec sheet
General information3 specs
Vehicle Type
Quad Cab and Crew Cab: 4x2, 4x4
Assembly Plant
Sterling Heights Assembly Plant, Sterling Heights, Michigan
EPA Vehicle Class
Standard Pickup
Body/chassis2 specs
Layout
4x2 — Longitudinal, front engine; 4x4 — Longitudinal, front engine, transfer case
Construction
4x2 — Ladder-type frame, steel cab, double-wall steel pickup box; 4x4 — Ladder-type frame, steel cab, double-wall steel pickup box
Engines64 specs
3.6-liter Pentastar V-6 with eTorque
Type and Description60-degree gasoline V-6 with variable valve timing, V-type, liquid-cooled
Hybrid Battery48-volt, 12-cell lithium-ion, nickel manganese cobalt (NMC) graphite chemistry, .43 kWh
Belt-starter Generator9kW power, 90 lb.-ft. launch torque
Displacement220 cu. in. (3,604 cu. cm)
Bore x Stroke3.78 x 3.27 (96.0 x 83.0)
Valve SystemChain-driven DOHC, 24 valves and hydraulic end-pivot roller rockers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionAluminum deep-skirt block, aluminum alloy heads
Compression Ratio11.3:1
Power305 hp (224 kW) @ 6,400 rpm
Torque269 lb.-ft. (364 N•m) @ 4,800 rpm
Max. Engine Speed6,400 rpm (electronically limited)
Fuel RequirementUnleaded regular, 87 octane
Oil Capacity6.0 quarts (5.7 liters)
Coolant Capacity14.0 quarts (13.25 liters)
Emission ControlsDual three-way catalytic converters, heated oxygen sensors
EPA Fuel Economy mpg (city/hwy)20/25
3.0-liter EcoDiesel V-6
Type and Description90-degree diesel V-6
Displacement182 cu. in. (2,988 cu. cm)
Bore x Stroke3.27 x 3.60 (83 x 92)
Valve SystemChain driven DOHC, 24 valves
Fuel InjectionCommon rail, 29,000 psi (2000 bar), solenoid injectors
ConstructionCast-iron block, aluminum alloy heads
Compression Ratio16.0:1
Power260 hp (194 kW) @ 3,600 rpm
Torque480 lb.-ft. (651 N•m) @ 1,600 rpm
Max. Engine Speed5,800 rpm
Fuel RequirementUltra-low sulfur diesel
Oil Capacity10.5 quarts (7.8 liters)
Coolant Capacity12.0 quarts (11.4 liters)
Emission ControlsCooled EGR, oxidation catalyst, diesel particulate filter, SCR with urea injection
EPA Fuel Economy mpg (city/hwy)22/32
5.7-liter HEMI V-8
Type and Description90-degree gasoline, V-8 with variable cam timing
Displacement345 cu. in. (5,654 cu. cm)
Bore x Stroke3.92 x 3.58 (99.5 x 90.9)
Valve SystemVariable-cam timing, pushrod-operated overhead valves, 16 valves, hydraulic lifters with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, aluminum alloy heads with hemispherical combustion chambers
Compression Ratio10.5:1
Power395 hp (291 kW) @ 5,600 rpm
Torque410 lb.-ft. (556 N•m) @ 3,950 rpm
Max. Engine Speed5,800 rpm
Fuel RequirementUnleaded mid-grade, 89 octane — recommended; Unleaded regular, 87 octane — acceptable
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity14.0 quarts (13.33 liters)
Emission ControlsThree-way catalytic converters, heated oxygen sensors and internal engine features
EPA Fuel Economy mpg (city/hwy)15/22
5.7-liter HEMI V-8 eTorque
Type and Description90-degree gasoline V-8 with variable cam timing
Hybrid Battery48-volt, 12-cell lithium-ion, nickel manganese cobalt (NMC) graphite chemistry, .43 kWh
Belt-starter Generator12kW power, 130 lb.-ft. launch torque
Displacement345 cu. in. (5,654 cu. cm)
Bore x Stroke3.92 x 3.58 (99.5 x 90.9)
Valve SystemVariable-cam timing, pushrod-operated overhead valves, 16 valves, hydraulic lifters with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, aluminum-alloy heads with hemispherical combustion chambers
Compression Ratio10.5:1
Power395 hp (291 kW) @ 5,600 rpm
Torque410 lb.-ft. (556 N•m) @ 3,950 rpm
Max. Engine Speed5,800 rpm
Fuel RequirementUnleaded mid-grade, 89 octane — recommended; Unleaded regular, 87 octane — acceptable
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity14.0 quarts (13.33 liters)
Emission ControlsThree-way catalytic converters, heated oxygen sensors and internal engine features
EPA Fuel Economy mpg (city/hwy)17/23
Transmission12 specs
TorqueFlite 850RE eight-speed automaticTorqueFlite 8HP75 eight-speed automatic
AvailabilityStandard with 3.6-liter Pentastar V-6Standard with 3.0-liter EcoDiesel V-6, 5.7-liter HEMI V-8 and 5.7-liter V-8 with eTorque
DescriptionAdaptive electronic control, automatic or Electronic Range Select (ERS) manual control. Five-clutch-pack design with only two open clutches in any gear. Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gearAdaptive electronic control, automatic or ERS manual control. Five-clutch-pack design with only two open clutches in any gear. Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gear
1st4.714.71
2nd3.143.14
3rd2.102.10
4th1.671.67
5th1.291.29
6th1.001.00
7th0.840.84
8th0.670.67
Reverse3.303.30
Axle Ratios3.21, 3.55, 3.92 (Rebel only)3.21, 3.55 (excluding 5.7-liter HEMI V-8), 3.92
Transfer case6 specs
BW 48-12 part-timeBW 48-11 on-demand
Availability3.6-liter Pentastar V-6 4x4 with eTorque, 3.0-liter EcoDiesel V-6, 5.7-liter HEMI V-8 4x4 and 5.7-liter HEMI V-8 with eTorque assist3.0-liter EcoDiesel V-6, 5.7-liter HEMI V-8 4x4 and 5.7-liter HEMI V-8 with eTorque assist
Shift MechanismElectricElectric
Available SpeedsTwo-speedTwo-speed
Operating Modes2WD High; 4WD High, Locked; Neutral; 4WD Low, Locked2WD High; 4WD Auto; 4WD High, Locked; Neutral; 4WD Low, Locked
Low-range Ratio2.642.64
Center Differential TypeNoneNone
Axles3 specs
Front
215mm
Rear
235mm (standard) with available open, limited-slip or electronic-locking differential; 256mm (optional max tow with Dana Super 60 center section)
Available Ratios
3.21, 3.55, 3.92
Electrical system3 specs
Architecture
Powernet
Alternator
160-amp, 180-amp, 220-amp (Special Services Package)
Battery
Group 94R, low-maintenance H7 730 CCA
Suspension2 specs
Front
Upper and lower A-arms, coil springs, twin-tube shock absorbers and stabilizer bar. Optional air suspension replaces twin-tube shock absorbers and progressive rate coil springs
Rear
Five-link with track bar, progressive rate coil springs, stabilizer bar, twin-tube shock absorbers, solid axle. Optional air suspension replaces progressive rate coil springs
Brakes5 specs
Front: Size and Type
14.9 x 1.2 (378 x 30) vented disc with 2.2 in. (57 mm) two-piston pin-slider caliper and anti-lock braking system (ABS)
Front: Swept Area
493.6 sq.in. (3,184 sq.cm)
Rear: Size and Type
14.8 x 0.87 (375 x 22) disc with 2.2 in. (57 mm) single-piston pin-slider caliper and ABS
Rear: Swept Area
367.6 sq.in. (2,371.9 sq.cm)
Power-assist
Dual-rate, tandem diaphragm vacuum
Steering1 spec
Power assist
Electric power steering
Air bags2 specs
Quad Cab
6
Crew Cab
6
Cargo box6 specs
5ft., 7in. (Crew)6ft., 4in. (Regular, Quad or Crew)
SAE volume, cu. ft. (cu m)53.9 (1.5)61.5 (1.7)
Length-at-Floor, Tailgate Closed67.4 (1,711)76.3 (1,937)
Cargo Width66.4 (1,687)66.4 (1,687)
Distance Between Wheelhouses51.0 (1,295)51.0 (1,295)
Depth21.4 (543)21.5 (545)
Tailgate Opening Width60.0 (1,525)60.0 (1,525)
Exterior dimensionsQuad Cab pickup, 6ft., 4in. boxExterior dimensions: Quad Cab pickup, 6ft., 4in. box6 specs
4x2 - 275/55R204x4 - 275/55R20
Wheelbase (nominal)140.5 (3,569)140.5 (3,569)
Track, Front68.5 (1,741)68.5 (1,741)
Track, Rear68.1 (1,729)68.1 (1,729)
Overall Length228.9 (5,814)228.9 (5,814)
Overall Width82.1 (2,084)82.1 (2,084)
Overall Height77.6 (1,971)77.7 (1,973)
Ground clearanceQuad Cab pickup, 6ft., 4in. boxGround clearance: Quad Cab pickup, 6ft., 4in. box11 specs
4x2 - 275/55R204x4 - 275/55R20
Front Axle7.8 (199)8.2 (208)
Rear Axle8.7 (221)8.7 (221)
Open Tailgate to Ground34.6 (979)34.4 (875)
Pickup Body Height21.4 (545)21.4 (545)
Approach Angle, degrees18.118.9
Departure Angle, degrees25.225.0
Ramp Breakover Angle Without Skid Plate, degrees19.519.9
Ramp Breakover Angle With Skid Plate, degrees—17.8
Ground Clearance Without Skid Plate8.4 (213)8.7 (221)
Ground Clearance With Skid Plate—8.2 (208)
Fuel Tank Capacity23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)
Exterior dimensionsQuad Cab pickup, 6ft., 4in. box, air suspension, 4x2 and 4x4 (tire size 275/55R20)Exterior dimensions: Quad Cab pickup, 6ft., 4in. box, air suspension, 4x2 and 4x4 (tire size 275/55R20)17 specs
Entry / exitNormal ride heightOff road 1Off road 2
Wheelbase (nominal)140.5 (3,569)140.5 (3569)140.5 (3,569)140.5 (3,569)
Track, Front68.5 (1,741)68.5 (1,741)68.5 (1,741)68.5 (1,741)
Track, Rear68.1 (1,729)68.1 (1,729)68.1 (1,729)68.1 (1,729)
Overall Length228.9 (5,814)228.9 (5,814)228.9 (5,814)228.9 (5,814)
Overall Width82.1 (2,084)82.1 (2,084)82.1 (2,084)82.1 (2,084)
Overall Height75.9 (1,927)77.7 (1,973)78.7 (1,998)79.7 (2,025)
Front Axle8.2 (208)8.2 (208)8.2 (208)8.2 (208)
Rear Axle8.7 (221)8.7 (221)8.7 (221)8.7 (221)
Open Tailgate to Ground32.9 (836)34.4 (875)35.1 (893)36.4 (925)
Pickup Body Height21.4 (545)21.4 (545)21.4 (545)21.4 (545)
Approach Angle, degrees14.418.921.523.1
Departure Angle, degrees22.525.025.927.3
Ramp Breakover Angle Without Skid Plate, degrees16.519.921.823.5
Ramp Breakover Angle With Skid Plate, degrees14.417.819.721.3
Ground Clearance Without Skid Plate6.7 (169)8.7 (221)9.9 (251)10.7 (273)
Ground Clearance With Skid Plate6.1 (156)8.2 (208)9.4 (238)10.2 (260)
Fuel Tank Capacity23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)

Column headings are the air-suspension modes.

Exterior dimensionsCrew Cab pickup (tire size 275/55R20)Exterior dimensions: Crew Cab pickup (tire size 275/55R20)6 specs
4x2 - 5ft., 7in. box4x2 - 6ft., 4in. box4x4 - 5ft., 7in. box4x4 - 6ft., 4in. box
Wheelbase (nominal)144.6 (3,672)153.5 (3,898)144.6 (3,672)153.5 (3,898)
Track, Front68.5 (1,741)68.5 (1,741)68.5 (1,741)68.5 (1,741)
Track, Rear68.1 (1,729)68.1 (1,729)68.1 (1,729)68.1 (1,729)
Overall Length232.9 (5,916)241.8 (6,142)232.9 (5,916)241.8 (6,142)
Overall Width82.1 (2,084)82.1 (2,084)82.1 (2,084)82.1 (2,084)
Overall Height77.5 (1,968)77.4 (1,966)77.6 (1,971)77.5 (1,968)
Ground clearanceCrew Cab pickup (tire size 275/55R20)Ground clearance: Crew Cab pickup (tire size 275/55R20)11 specs
4x2 - 5ft., 7in. box4x2 - 6ft., 4in. box4x4 - 5ft., 7in. box4x4 - 6ft., 4in. box
Front Axle7.8 (199)7.8 (199)8.2 (209)8.1 (207)
Rear Axle8.6 (220)8.7 (220)8.7 (220)8.6 (220)
Open Tailgate to Ground34.5 (877)34.4 (875)34.3 (872)34.3 (871)
Pickup Body Height21.4 (543)21.4 (545)21.4 (543)21.4 (545)
Approach Angle, degrees18.018.119.018.9
Departure Angle, degrees25.125.024.924.9
Ramp Breakover Angle Without Skid Plate, degrees19.018.419.518.7
Ramp Breakover Angle With Skid Plate, degrees——17.516.7
Ground Clearance Without Skid Plate8.3 (211)8.3 (212)8.7 (222)8.6 (220)
Ground Clearance With Skid Plate——8.2 (209)8.1 (207)
Fuel Tank Capacity23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)
Exterior dimensions34 specs
Entry / exitNormal ride heightOff road 1Off road 2
Crew Cab, 5ft., 7in. box, air suspension, 4x2 and 4x4 (tire size 275/55R20)
Wheelbase (nominal)144.6 (3,672)144.6 (3,672)144.6 (3,672)144.6 (3,672)
Track, Front68.5 (1,741)68.5 (1,741)68.5 (1,741)68.5 (1,741)
Track, Rear68.1 (1,729)68.1 (1,729)68.1 (1,729)68.1 (1,729)
Overall Length232.9 (5,916)232.9 (5,916)232.9 (5,916)232.9 (5,916)
Overall Width82.1 (2,084)82.1 (2,084)82.1 (2,084)82.1 (2,084)
Overall Height75.8 (1,926)77.6 (1,971)78.6 (1,996)79.6 (2,023)
Front Axle8.2 (209)8.2 (209)8.2 (209)8.2 (209)
Rear Axle8.7 (220)8.7 (220)8.7 (220)8.7 (220)
Open Tailgate to Ground32.8 (833)34.3 (872)35.0 (890)36.3 (923)
Pickup Body Height21.4 (543)21.4 (543)21.4 (543)21.4 (543)
Approach Angle, degrees14.619.021.723.3
Departure Angle, degrees22.424.925.827.2
Ramp Breakover Angle Without Skid Plate, degrees16.219.521.423.0
Ramp Breakover Angle With Skid Plate, degrees14.217.519.321.0
Ground Clearance Without Skid Plate6.7 (170)8.7 (222)9.9 (252)10.8 (273)
Ground Clearance With Skid Plate6.2 (157)8.2 (209)9.4 (239)10.3 (261)
Fuel Tank Capacity23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)
Crew Cab, 6ft., 4in. box, air suspension, 4x2 and 4x4 (tire size 275/55R20)
Wheelbase (nominal)153.5 (3,898)153.5 (3,898)153.5 (3,898)153.5 (3,898)
Track, Front68.5 (1,741)68.5 (1,741)68.5 (1,741)68.5 (1,741)
Track, Rear68.1 (1,729)68.1 (1,729)68.1 (1,729)68.1 (1,729)
Overall Length241.8 (6,142)241.8 (6,142)241.8 (6,142)241.8 (6,142)
Overall Width82.1 (2,084)82.1 (2,084)82.1 (2,084)82.1 (2,084)
Overall Height75.7 (1,922)77.5 (1,968)78.4 (1,993)79.5 (2,019)
Front Axle8.1 (207)8.1 (207)8.1 (207)8.1 (207)
Rear Axle8.6 (220)8.6 (220)8.6 (220)8.6 (220)
Open Tailgate to Ground32.7 (832)34.3 (871)35.0 (889)36.3 (922)
Pickup Body Height21.4 (545)21.4 (545)21.4 (545)21.4 (545)
Approach Angle, degrees14.518.921.523.1
Departure Angle, degrees22.724.925.827.1
Ramp Breakover Angle Without Skid Plate, degrees15.518.720.622.1
Ramp Breakover Angle With Skid Plate, degrees13.516.718.520.1
Ground Clearance Without Skid Plate6.6 (168)8.6 (220)9.8 (250)10.7 (271)
Ground Clearance With Skid Plate6.1 (155)8.1 (207)9.3 (237)10.2 (259)
Fuel Tank Capacity23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)23-gal. (87-liter) (standard); 26-gal. (98-liter) (standard); 33-gal. (125-liter) (optional)

Column headings are the air-suspension modes.

Interior dimensions11 specs
Quad CabCrew Cab
accommodations
Seating Capacity, F/R3/33/3
front
Headroom40.9 (1,038)40.9 (1,038)
Legroom40.9 (1,040)40.9 (1,040)
Shoulder Room66.0 (1,676)66.0 (1,676)
Hip Room63.4 (1,610)63.4 (1,610)
Seat Travel8.7 (220)8.7 (220)
Recliner Range (degrees)Total travel 71 degrees (from full forward); 18 degrees forward (from design); 53 degrees rearward (from design)Total travel 71 degrees (from full forward); 18 degrees forward (from design); 53 degrees rearward (from design)
rear
Headroom39.2 (995)39.8 (1,011)
Legroom35.6 (903)45.2 (1,147)
Shoulder Room65.7 (1,668)65.7 (1,670)
Hip Room63.4 (1,610)63.4 (1,611)
Interior volume2 specs
Quad CabCrew Cab
Front – cu. ft. (cu m)63.9 (1.8)63.9 (1.8)
Rear – cu. ft. (cu m)53.3 (1.5)68.5 (1.9)
Steering specifications10 specs
2WD short bed2WD long bed4WD short bed4WD long bed4WD Rebel
Quad Cab pickup
Wheelbase (nominal; in/mm)140.5 / 3,569140.5 / 3,569140.5 / 3,569140.5 / 3,569140.5 / 3,569
Overall Ratio16.3:116.3:116.3:116.3:117.8:1
Steering Wheel Turns (lock-to-lock)3.13.13.13.13.4
18-in. Tire Turning Diameter (ft. / M)*46.2 / 14.146.2 / 14.146.2 / 14.146.2 / 14.146.2 / 14.1
20-in. Tire Turning Diameter (ft. / M)*45.1 / 13.7445.1 / 13.7445.1 / 13.7445.1 / 13.74—
Crew Cab pickup
Wheelbase (nominal)144.6 / 3,672153.5 / 3,898144.6 / 3,572153.5 / 3,898144.6 / 3,572
Overall Ratio16.3:115.5:116.3:115.5:117.8:1
Steering Wheel Turns (lock-to-lock)3.12.93.12.93.4
18-in. Tire Turning Diameter (ft. / M)*46.2 / 14.0848.7 / 14.8446.2 / 14.0848.7 / 14.8446.2 / 14.1
20-in. Tire Turning Diameter (ft. / M)*46.2 / 14.0848.7 / 14.8446.2 / 14.0848.7 / 14.84—

Curb-to-curb turning diameter is measured at the outside of the tires at curb height; turning diameters and lock-to-lock turns may differ with optional tires and wheels.— not listed or not applicable

Source: 2021 Ram 1500 Specifications (Stellantis media site).

2021 Ram 1500 fuel economy (EPA)

The EPA rates the 2021 Ram 1500 at 12–26 MPG combined; the 3.0L 6-cylinder turbo (RWD) is the most efficient and the 6.2L 8-cylinder supercharged (4WD) the thirstiest. Every EPA test configuration is below, from the government's fuel-economy database.

City, highway and combined figures are in MPG (MPGe on electricity).

VersionEngineTransmission · driveCityHwyComb.Fuel / yrCO₂ g/mi
1500 2WD5.7L 8-cylinder8-speed automatic · RWD15MPG22MPG17MPG$4,200514
1500 HFE 2WD3.6L 6-cylinderMild Hybrid; stop-start8-speed automatic · RWD20MPG26MPG23MPG$2,700394
1500 2WD3.6L 6-cylinderMild Hybrid; eTorque; stop-start8-speed automatic · RWD20MPG25MPG22MPG$2,850407
1500 2WD5.7L 8-cylinderMild Hybrid; eTorque; stop-start8-speed automatic · RWD17MPG23MPG19MPG$3,750467
1500 2WD3.0L 6-cylinder turbostop-start8-speed automatic · RWD22MPG32MPG26MPG$3,650390
1500 HFE 2WD3.0L 6-cylinder turbo8-speed automatic · RWD23MPG33MPG26MPG$3,650384
1500 4WD5.7L 8-cylinder8-speed automatic · 4WD15MPG21MPG17MPG$4,200523
1500 TRX 4WD6.2L 8-cylinder superchargedHellcat engine8-speed automatic · 4WD10MPG14MPG12MPG$6,450748
1500 4WD3.6L 6-cylinderMild Hybrid; eTorque; stop-start8-speed automatic · 4WD19MPG24MPG21MPG$2,950417
1500 4WD5.7L 8-cylinderMild Hybrid; eTorque; stop-start8-speed automatic · 4WD17MPG22MPG19MPG$3,750472
1500 4WD3.0L 6-cylinder turbostop-start8-speed automatic · 4WD21MPG29MPG24MPG$3,950418

Source: U.S. EPA and Department of Energy, fueleconomy.gov. MPG is miles per gallon (MPGe for electric operation). Plug-in hybrids list gasoline-only MPG with the electric rating underneath. Annual fuel cost assumes 15,000 miles a year at the EPA's fuel-price assumptions, so yours will differ. Range is total driving range on a full tank or charge.

2021 Ram 1500 wheels & tires

The spec sheet doesn't list tire sizes for this model year; here is what the owner's manual says.

Cold tire pressure
Not a single number: the owner's manual refers to the tire and loading placard, which lists the pressures for your exact tire size and load.
Spare
Manual describes compact spare, non-matching full-size spare or tire service kit, depending on equipment. The compact and non-matching full-size spares have no pressure sensor.
Lug nut torque
130 ft-lb (176 N·m), M14 x 1.50 thread, 22 mm socket
Pressure monitor
A tire pressure monitoring system warns when a tire is low.

Sizes and pressures vary by trim, wheel package and load: check the placard on your vehicle and the tire sidewall. Sizes from the manufacturer's specification sheet (2021 Ram 1500 Specifications, 2021 Ram 1500 TRX Specifications). Pressure and spare notes from the owner's manual.

2021 Ram 1500 maintenance schedule

The factory schedule for normal driving. Oil changes follow the oil-change indicator on most models; severe use (towing, dusty roads, lots of idling) shortens some intervals.

Schedule

A dot means the service is due at that mileage or after that many years, whichever comes first.

Additional Inspections

  • Inspect the CV/Universal joints
  • Inspect front suspension, tie rod ends, and replace if necessary
  • Inspect the brake linings, replace as necessary

Additional Maintenance

  • Replace cabin air filter
Service20k2 yr30k3 yr40k4 yr50k5 yr60k6 yr70k7 yr80k8 yr90k9 yr100k10 yr110k11 yr120k12 yr130k13 yr140k14 yr150k15 yr
Additional Inspections
Inspect the CV/Universal joints
Inspect front suspension, tie rod ends, and replace if necessary
Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid.
Inspect the brake linings, replace as necessary
Inspect transfer case fluid
Additional Maintenance
Replace cabin air filter
Replace engine air cleaner
If equipped with Stop/Start, replace accessory drive belt with OEM grade Mopar® belt
Replace spark plugsThe spark plug change interval is mileage based only; yearly intervals do not apply.
Flush and replace the engine coolant at 10 years or 150,000 miles (240,000 km) whichever comes first
Inspect the transfer case fluid, change for any of the following: police, taxi, fleet, or frequent trailer towing
Change the transfer case fluid
Inspect and replace PCV valve if necessary

At every oil change

  • Change the oil and filter
  • Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on
  • Inspect the battery and clean and tighten terminals as required
  • Inspect the CV/Universal joints
  • Inspect the brake pads, shoes, rotors, drums, and hoses
  • Inspect the engine cooling system protection and hoses
  • Inspect the exhaust system
  • Inspect the engine air cleaner if using in dusty or off-road conditions, replace the engine air cleaner, as necessary
  • Inspect and replace the Evaporative System Fresh Air Filter as necessary; replacement may be more frequent if vehicle is operated in extreme dusty conditions
Compare with another year

2021 Ram 1500 fluids & capacities

Oil, coolant, transmission and axle fluids with their capacities and specifications, wheel torque and fuel requirements, from the owner's manual.

Fluid capacities

SystemApplies toCapacity
All engines
Fuel tank (approximate)1500 Regular Cab Shortbed/Crew/Quad Cab models23 gal87 L
1500 Regular Cab Shortbed/Crew/Quad Cab models26 gal98 L
1500 Regular Cab Longbed/Crew/Quad Cab models (optional)33 gal121 L
Diesel exhaust fluid tankTradesman/Rebel models5.14 gal19.5 L
All other models5.74 gal21.7 L
3.6L engine
Engine oil with filter5 qt4.7 L
Cooling system13.7 qt13 L
Motor generator unit1.8 qt1.7 L
5.7L engine
Engine oil with filter7 qt6.6 L
Cooling system18.3 qt17.3 L
3.0L diesel engine
Fuel tank (approximate)Turbo diesel engine26 gal98.5 L
Engine oil with filterTurbo diesel engine8.5 qt8.0 L
Cooling systemTurbo diesel engine11.6 qt11 L

Engine fluids

ComponentFluid / gradeMopar product
All engines
Engine coolant
10-year/150,000-mile OAT (organic additive technology) coolant
Mopar Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km) Formula OAT
Engine oil filter
Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements
Mopar Engine Oil Filter
3.6L engine
Engine coolantMotor generator unit (if equipped)
10-year/150,000-mile OAT (organic additive technology) coolant
Mopar Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km) Formula OAT
Engine oil
SAE 0W-20, API certifiedMS-6395
—
5.7L engine
Engine oil
SAE 5W-20, API certifiedMS-6395
—
3.0L diesel engine
Engine coolantTurbo diesel engine
10-year/150,000-mile OAT (organic additive technology) coolant
Mopar Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km) Formula OAT
Engine oilTurbo diesel engine
SAE 5W-40 synthetic, API SN category requiredMS-12991
—
Engine oil filterTurbo diesel engine
Mopar engine oil filter
Mopar engine oil filter
Fuel filterTurbo diesel engine
Mopar fuel filter, 3 micron rating
Mopar fuel filter
Diesel exhaust fluid (DEF)Turbo diesel engine
API-certified DEF meeting ISO 22241
Mopar Diesel Exhaust Fluid

Chassis fluids & lubricants

ComponentFluid / gradeMopar product
Automatic transmission
ZF 8 & 9 speed automatic transmission fluid (ATF), or equivalent
Mopar ZF 8 & 9 Speed ATF
Transfer case48-11 active on-demand 2-speed (with 4WD AUTO)
Mobil Fluid LT
—
Transfer case48-12 part-time 2-speed (without 4WD AUTO)
Shell Spirax S2 ATF A389
—
Front axle
SAE 75W-85 GL-5 synthetic axle lubricant
Mopar GL-5 Synthetic Axle Lubricant SAE 75W-85
Rear axle3.21/3.55 ratio
SAE 75W-90 synthetic gear lubricantMS-A0160
Mopar Synthetic Gear Lubricant SAE 75W-90
Rear axle3.92 ratio
SAE 75W-140 synthetic gear lubricantMS-8985
Mopar Synthetic Gear Lubricant SAE 75W-140
Rear axleMax Tow 3.92 ratio
SAE 80W-90 axle lubricant
Dana SAE 80W90 Axle Lubricant
Brake master cylinder
DOT 3 brake fluid, SAE J1709
Mopar DOT 3 Brake Fluid

Fuel

EngineMinimumEthanol / biodiesel
3.6L engine
87 octane Regular unleaded
Up to 15% (E15)
5.7L engine
87 octane Unleaded gasoline (89 recommended for best performance and fuel economy (87 acceptable))
Up to 15% (E15)
3.0L turbo diesel engine
Ultra-low-sulfur diesel
Up to B5

Wheel lug nut torque

WheelsTorque
Lug nuts/boltsThread M14 x 1.5022 mm socket130 ft‑lb (176 N·m)
  • The first two fuel tank rows share the same label in the manual; they are printed as two separate sizes without further distinction.
  • The 5.7L engine accepts 87 to 89 octane; 89 is recommended.
  • Replace the diesel fuel filter about every 20,000 miles (32,000 km); every 10,000 miles (16,000 km) in severe use or certain states with fuel cleanliness issues.
  • Limited-slip rear axles need 5 oz (148 ml) of Mopar Limited Slip Additive (MS-10111) added to the 3.21/3.55 and 3.92 axle lubricants.
  • Use only OAT coolant; no water alone, alcohol-based coolant or added rust inhibitors, and propylene glycol coolant is not recommended.
  • Below 20°F (-7°C), use climatized or No. 1 ULSD, or dilute No. 2 with 50% No. 1, to prevent fuel gelling.

Source: Owner's manual on Mopar.com. Always confirm with the manual for your exact vehicle.

2021 Ram 1500 recalls & safety

What the U.S. government's National Highway Traffic Safety Administration (NHTSA) has on file for the 2021 Ram 1500: 15 recall campaigns, 687 owner complaints and crash-test ratings. Fetched November 8, 2026.

NHTSA 5-Star Safety Ratings

VersionOverallFrontalSideRollover
Ram 1500 Crew PU/CC 4WD
19.8% risk
Ram 1500 Quad PU/EC 4WD
19.8% risk
Ram 1500 Crew PU/CC 2WD
19.8% risk
Ram 1500 Quad PU/EC 2WD
19.8% risk

Stars compare vehicles of similar weight; rollover shows the tested chance of a rollover in a single-vehicle crash.

Recalls (15)

Newest first. A campaign covers certain vehicles of this model year, not necessarily every one. To see which apply to a specific vehicle, and whether the fix has been done, enter its VIN at nhtsa.gov/recalls or ask a dealer; repairs are free of charge.

Seat belts: rear/other: anchorageJuly 30, 2026 · Campaign 26V495000

Chrysler (FCA US, LLC) is recalling certain 2019-2026 Ram 1500 vehicles. The second-row center and left-side seat belt buckle anchors may have been improperly installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."

Risk: An improperly installed seat belt buckle anchor may fail to properly restrain occupants, increasing the risk of injury during a crash.

Fix: Dealers will inspect and attach the seat belt buckle anchor to the body structure as necessary, free of charge. Owner notification letters are expected to be mailed August 18, 2026. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is 67D.

Campaign 26V495000 on NHTSA.gov
Air bags: frontalNovember 6, 2025 · Campaign 25V765000

Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.

Fix: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C.

Campaign 25V765000 on NHTSA.gov
Air bagsMay 8, 2025 · Campaign 25V298000

Chrysler (FCA US, LLC) is recalling certain 2019-2024 Ram 1500 vehicles. The driver's side air bag may not be connected properly, which can cause the air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.

Fix: Dealers secured the connectors for the air bag, free of charge. All vehicles have been remedied. Owner notification letters were mailed May 27, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 08C.

Campaign 25V298000 on NHTSA.gov
Visibility: rearview mirrors/devicesOctober 10, 2024 · Campaign 24V754000

Chrysler (FCA US, LLC) is recalling certain 2020-2023 Ram 1500 Classic vehicles equipped with heated trailer tow rearview mirrors. The mirror glass may detach from the driver's side heated trailer tow rearview mirror. As such these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: Detached mirror glass can reduce driver visibility, increasing the risk of a crash.

Fix: Dealers will replace the mirror glass, free of charge. Owner notification letters were mailed December 5, 2024. Owners may contact FCA Customer Service at 1-800-853-1403. FCA's number for this recall is 86B.

Campaign 24V754000 on NHTSA.gov
Service brakes, hydraulic: antilock/traction control/electronic limited slip: control unit/moduleSeptember 5, 2024 · Campaign 24V653000

Chrysler (FCA US, LLC) is recalling certain 2019, 2021-2024 Ram 1500 vehicles. Due to a software malfunction, the anti-lock brake system (ABS) control module may disable the electronic stability control system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."

Risk: Driving with a disabled electronic stability control system can increase the risk of a crash.

Fix: Dealers will update the ABS control module software, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed October 10, 2024. Owner notification letters were mailed beginning September 26, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403.

Campaign 24V653000 on NHTSA.gov
Power train: automatic transmission: control module (TCM/PCM/TECM)April 13, 2023 · Campaign 23V265000

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles equipped with 5.7L eTorque engines. The powertrain control module software may cause an incorrect fuel mixture condition in the engine, and result in an engine stall.

Risk: An engine stall can increase the risk of a crash.

Fix: Dealers will update the Powertrain Control Module calibration software, free of charge. Owner notification letters were mailed April 27, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 37A.

Campaign 23V265000 on NHTSA.gov
Show 9 older recalls
Back over prevention: display functionFebruary 9, 2023 · Campaign 23V059000

Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 1500 and 2023 Ram 2500 vehicles. The trailer reverse steering control module (TRSCM) may prevent the rearview image from displaying when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: A rearview image that does not display while in reverse decreases the driver's visibility of the rear view, increasing the risk of injury or crash.

Fix: Dealers will update the TRSCM software, free of charge. Owner notification letters were mailed March 1, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 14A. This recall supersedes and expands previous recall numbers 21V-438 and 21V-918.

Campaign 23V059000 on NHTSA.gov
Structure: body: tailgate: hinge and attachmentsDecember 8, 2022 · Campaign 22V904000

Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailgate opening while driving.

Risk: An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creating a road hazard and increasing the risk of a crash.

Fix: Dealers will inspect the tailgate striker alignment to the box latch and adjust, if necessary, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZB8.

Campaign 22V904000 on NHTSA.gov
Fuel system, gasoline: delivery: fuel pumpOctober 13, 2022 · Campaign 22V767000

Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.

Risk: An engine stall can increase the risk of a crash.

Fix: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.

Campaign 22V767000 on NHTSA.gov
Back over prevention: display functionAugust 25, 2022 · Campaign 22V638000

Chrysler (FCA US, LLC) is recalling certain 2020-2021 Jeep Wrangler, RAM 1500 and 2021 Jeep Gladiator vehicles. A radio software error may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.

Fix: Dealers will update the radio software, free of charge. Owner notification letters were mailed October 6, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, LLC's number for this recall is Z86.

Campaign 22V638000 on NHTSA.gov
Air bags: side/window: curtainNovember 24, 2021 · Campaign 21V925000

Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured with the incorrect amount of compressed gas, which can result in an improper air bag deployment.

Risk: An air bag that deploys improperly can increase the risk of injury in a crash.

Fix: Dealers will replace the SABIC assemblies, free of charge. Owner notification letters were mailed January 17, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y99.

Campaign 21V925000 on NHTSA.gov
Back over prevention: display functionNovember 23, 2021 · Campaign 21V918000

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 pickup trucks. The Trailer Reverse Steering Control Module (TRSCM) may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.

Fix: Dealers will update the TRSCM software. Interim owner notification letters were mailed on January 19, 2022. Owner notification letters were mailed on February 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y80. This recall was superseded by 23V-059.

Campaign 21V918000 on NHTSA.gov
Tires: temporary/emergency spare tireSeptember 9, 2021 · Campaign 21V698000

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles. The incorrect-size spare tire may have been installed, which does not match the tire size and inflation pressure information on the tire placard. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection And Rims."

Risk: A driver that relies on the incorrect spare tire inflation pressure on the tire placard label may inflate the spare tire incorrectly, increasing the risk of a crash.

Fix: Dealers will replace the spare tire assembly, free of charge. The owner notification letter was mailed on September 9, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y62.

Campaign 21V698000 on NHTSA.gov
Back over prevention: display functionJune 10, 2021 · Campaign 21V438000

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles equipped with a trailer reverse steering module (TRSCM). The rearview camera image may not display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash or injury.

Fix: Dealers will update the TRSCM software, free of charge. Owner notification letters were mailed June 24, 2021. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, US, LLC's number for this recall is Y30. This recall was superseded by recall number 21V-918.

Campaign 21V438000 on NHTSA.gov
Service brakes, hydraulic: foundation components: master cylinderFebruary 1, 2021 · Campaign 21V037000Do not drive

Chrysler (FCA US, LLC) is recalling certain 2020-2021 Ram 1500 Classic SLT trucks. Certain vehicles were built without the retaining clip that secures the master cylinder push rod to the brake pedal, which can cause the brake pedal to separate from the brake system.

Risk: A separated brake pedal can result in the driver being unable to apply the service brakes, increasing the risk of a crash.

Fix: Owners are advised to not drive their vehicles until they receive instructions on the inspection and repair, as necessary. FCA US will notify owners, and dealers will inspect and install the push rod clip, free of charge. The recall began February 9, 2021. Owners may contact FCA US customer service at 1-800-853-1403.

Campaign 21V037000 on NHTSA.gov

Owner complaints by component

Complaints
687
Crashes
27
Fires
4
Injuries
23
  • Engine277
  • Electrical system199
  • Unknown or other103
  • Power train100
  • Service brakes73
  • Fuel/propulsion system70
  • Forward collision avoidance52
  • Steering50

Complaints are reports owners filed with NHTSA; they are not verified and a complaint can name more than one component. A high count reflects how many were sold as much as how often something fails.

Source: NHTSA public data (recalls, complaints and the New Car Assessment Program), covering Ram 1500, Ram 1500 Crew Cab Trx. Check nhtsa.gov/recalls for the latest.

2021 Ram 1500 owner's manuals & publications

The manufacturer's owner's manual, quick guides, radio manuals, supplements and warranty booklets for the 2021 model year.

Salt, snow and hills: the data

The 2021 Ram 1500 against salt, snow and steep grades

We read the 2021 1500 owner data, service schedule and spec sheets with Indiana driving in mind: frozen starts, salted highways, cratered streets and hills. These are the figures worth acting on.

What the manual says about oil

The fluids table calls for SAE 0W-20 (3.6L), SAE 5W-20 (5.7L) and SAE 5W-40 (3.0L turbo diesel) at 5 qt (3.6L), 7 qt (5.7L) and 8.5 qt (3.0L turbo diesel), with synthetic oil in the specification. Synthetic stock copes with both ends of this region's weather, from a subzero start in the Upper Peninsula to a loaded summer climb in the Smokies. Match the exact specification on the filler cap, not just the viscosity.

Starting in single digits

Battery care in this schedule: inspect it and clean and tighten the terminals as required at each oil change, and the spec sheet rates it at 730 cold-cranking amps. A battery that bakes through a Nashville or Memphis summer ages faster, then gets found out by the first hard freeze. Have it load-tested in fall rather than waiting for a slow crank.

Which wheels do the pulling

Factory drive configurations for 2021: rear-wheel drive and four-wheel drive. The same trim name can come with more than one drive system, so on a used 1500 confirm it from the window sticker or a VIN decode rather than the badge. In west Michigan, where lake-effect bands can pile up several inches of snow in an hour, driving both axles is what gets a loaded vehicle up an icy driveway.

Boats, campers and Appalachian grades

Regular towing puts the 2021 Ram 1500 on the schedule's trailer rows: axle fluid and transfer case fluid service, first at 30,000 miles. A summer of hauling a boat to Lake Cumberland, Norris Lake or a Lake Michigan launch counts. Maximum trailer weight in the towing chart is 12,750 lb, and only one configuration reaches it. The Great Lakes are fresh water, so a trailer's real corrosion threat here is winter road salt, not the ramp.

Gravel hollow roads and the air filter

The schedule asks for more frequent air-filter attention in dusty conditions, beyond the normal replacement every 30,000 miles. Gravel roads up Appalachian hollows and coal-haul routes in West Virginia and eastern Kentucky qualify, so inspect the filter at each oil change if they are part of your week.

Octane from the owner data

The owner data specifies 87 octane, with 89 recommended. A higher grade than the manual asks for adds cost without benefit, while a lower one than required makes the engine pull back ignition timing, which shows most under load on a long Appalachian climb.

Data behind these notes: owner's manual capacities, the Mopar service schedule and factory spec sheets. Regional advice is general, written for drivers from Indiana to West Virginia.

2021 Ram 1500 questions

How much oil does the 2021 Ram 1500 take?

With a filter change: 3.6L engine, 5 qt / 4.7 L; 5.7L engine, 7 qt / 6.6 L; and 3.0L turbo diesel engine, 8.5 qt / 8.0 L. Capacities are from the owner's manual; check the dipstick or oil-life display after filling.

What kind of oil does the 2021 Ram 1500 use?

3.6L engine: SAE 0W-20, API certified (MS-6395); 5.7L engine: SAE 5W-20, API certified (MS-6395); Gasoline engines: Mopar engine oil filter, or one meeting SAE/USCAR-36 filter performance requirements; 3.0L turbo diesel engine: SAE 5W-40 synthetic, API SN category required (MS-12991); and 3.0L turbo diesel engine: Mopar engine oil filter.

When is the first scheduled maintenance on the 2021 Ram 1500?

At 20,000 miles or 2 years: inspect the cv/universal joints; inspect front suspension, tie rod ends, and replace if necessary; inspect the brake linings, replace as necessary; replace cabin air filter. Oil changes in between follow the oil-change indicator.

Where can I find the 2021 Ram 1500 owner's manual?

The manufacturer publishes it free on Mopar.com as a PDF (linked in the manuals section above), along with quick guides, radio manuals and the warranty booklet.

What MPG does the 2021 Ram 1500 get?

The EPA rates the 2021 Ram 1500 at 12–26 MPG combined, depending on the version. 5.7L 8-cylinder, 8-speed automatic, RWD: 15 city / 22 highway / 17 combined; 3.6L 6-cylinder, 8-speed automatic, RWD: 20 city / 26 highway / 23 combined; 3.6L 6-cylinder, 8-speed automatic, RWD: 20 city / 25 highway / 22 combined; 5.7L 8-cylinder, 8-speed automatic, RWD: 17 city / 23 highway / 19 combined; 3.0L 6-cylinder turbo, 8-speed automatic, RWD: 22 city / 32 highway / 26 combined. Ratings are the EPA's laboratory figures from fueleconomy.gov; real-world mileage varies with driving, load and weather.

What changed on the 2021 Ram 1500?

TRX new trim: TRX; TRX dropped trims: Tradesman, HFE, Big Horn/Lone Star, Rebel, Laramie and 2 more; TRX powertrain no longer listed: 3.6-liter V-6 Pentastar, eight-speed automatic and eTorque, 3.0-liter V-6 EcoDiesel, eight-speed automatic and 5.7-liter V-8 HEMI, eight-speed automatic and eTorque; TRX new option packages: Carbon Fiber Package, Interior Color Accent Package, TR Level 1 Equipment Group, TR Level 2 Equipment Group and 7 more.

Does the 2021 Ram 1500 have recalls?

NHTSA lists 15 safety recall campaigns for the 2021 Ram 1500. The most recent: Seat belts: rear/other (July 2026), Air bags: frontal (November 2025), and Air bags (May 2025). NHTSA's data was last fetched November 8, 2026. Recalls are listed by model year, so a given vehicle may or may not be covered: enter its VIN at nhtsa.gov/recalls or ask a dealer to see which are open.

What are the most common safety complaints about the 2021 Ram 1500?

Owners have filed 687 complaints about the 2021 Ram 1500 with NHTSA. The components named most often are engine (277), electrical system (199), and unknown or other (103). 27 complaints involved a crash and 4 complaints a fire. Complaints are reports from owners that NHTSA does not verify, so treat them as a signal to look into, not a finding.

What is the 2021 Ram 1500's NHTSA crash-test rating?

NHTSA's overall 5-Star Safety Rating for the 2021 Ram 1500 is 4 to 5 out of 5 stars depending on the version (Ram 1500 Crew PU/CC 4WD: 5, Ram 1500 Quad PU/EC 4WD: 4, Ram 1500 Crew PU/CC 2WD: 5, and Ram 1500 Quad PU/EC 2WD: 4). The rating combines frontal, side and rollover tests.

Specifications come from the manufacturer's spec comparison and its media-site specification sheets; maintenance schedules, fluids and publications come from Mopar's owner site and owner's manuals. Equipment and ratings vary by configuration; check the owner's manual or a dealer for a specific vehicle.