2021 · Full-Size Pickup · Diesel

2021 Ram 1500 Diesel MPG & fuel economy

The 2021 Ram 1500 Diesel is a full-size pickup offered in 3 EPA-rated configurations. The most efficient version returns 26 MPG combined (22 city / 32 highway) on diesel. Across the lineup, combined ratings range from 24 to 26 MPG. Efficiency is unchanged from the 2020 model. Among 17 full-size pickups rated for 2021, it ranks 7th for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $2,135 a year to fuel.

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Combined 26 MPG 22 MPG city · 32 MPG hwy

Driving range — not published for this model

Your fuel cost $2,135 15,000 mi/yr · $14.23 per 100 mi

Class rank, 2021 #7 of 17 Full-Size Pickups by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Miles per year Diesel $/gal

Fuel average

The 2021 Ram 1500 Diesel's fuel average is 11.1 km/L (9.0 L/100 km), or 26 MPG combined: 9.4 km/L in the city and 13.6 km/L on the highway.

	MPG	km/L	L/100 km
City	22	9.4	10.7
Highway	32	13.6	7.4
Combined	26	11.1	9.0

How it ranks among 2021 Full-Size Pickups

Full class ranking →

1Ford F150 Hybrid25 MPG $1,860
2Ford Ranger23 MPG $2,022
3Ram 1500 Hybrid23 MPG $2,022
4Chevrolet Silverado Diesel27 MPG $2,056
5Ford F15022 MPG $2,114
···
7Ram 1500 Diesel26 MPG $2,135
···
17Nissan Titan18 MPG $3,292

2021 1500 DieselOther full-size pickupsClass median: $2,214/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

1500 Diesel MPG across model years

Full history →

3 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
RWD · 3.0L 6-cyl turbo · 8-speed automatic 1500 2WD	Diesel	22 MPG	32 MPG	26 MPG	—	$2,135
RWD · 3.0L 6-cyl turbo · 8-speed automatic 1500 HFE 2WD	Diesel	23 MPG	33 MPG	26 MPG	—	$2,135
4WD · 3.0L 6-cyl turbo · 8-speed automatic 1500 4WD	Diesel	21 MPG	29 MPG	24 MPG	—	$2,312

Specs (most efficient configuration)

Fuel: Diesel
Engine / motor: 3.0L 6-cyl turbo
Transmission: 8-speed automatic
Drivetrain: RWD
Tailpipe CO₂: 390 g/mi
EPA fuel economy score: 5/10
EPA greenhouse gas score: 5/10

2021 Ram 1500 Diesel vs. rivals

vs GMC Sierra Diesel 26 MPG · $2,135/yr Same fuel cost vs Ford F150 22 MPG · $2,114/yr F150 saves $21/yr vs GMC Sierra 21 MPG · $2,214/yr 1500 Diesel saves $80/yr vs Chevrolet Silverado 21 MPG · $2,214/yr 1500 Diesel saves $80/yr vs Honda Ridgeline 21 MPG · $2,214/yr 1500 Diesel saves $80/yr vs Chevrolet Silverado Diesel 27 MPG · $2,056/yr Silverado Diesel saves $79/yr vs Ford Ranger 23 MPG · $2,022/yr Ranger saves $113/yr vs Ford F150 Hybrid 25 MPG · $1,860/yr F150 Hybrid saves $275/yr vs Ram 1500 20 MPG · $2,325/yr 1500 Diesel saves $190/yr vs Ram 1500 Hybrid 23 MPG · $2,022/yr 1500 Hybrid saves $113/yr vs GMC Canyon 22 MPG · $2,114/yr Canyon saves $21/yr

Compare the 2021 1500 Diesel

With any other car from any year, including other 1500 Diesel model years. Type a year to jump, e.g. "2015 Accord".

Same year, other powertrains: 2021 Ram 1500 (20 MPG), 2021 Ram 1500 Hybrid (23 MPG)

Frequently asked questions

What is the gas mileage of the 2021 Ram 1500 Diesel?

Up to 26 MPG combined (22 city / 32 highway); ratings range from 24 to 26 MPG depending on configuration.

What fuel does the 2021 Ram 1500 Diesel use?

Diesel.

What is the fuel average in km/L for the 2021 Ram 1500 Diesel?