Most efficient diesel vehicles, 2026 model year
5 diesel models are rated for model year 2026. Their best combined ratings run from 23 to 25 MPG, with a median of 24. Chevrolet Silverado Diesel leads at 25; GMC Yukon Diesel is last at 23.
On annual fuel cost under the file's assumptions, Chevrolet Silverado Diesel is lowest at $3,850 and GMC Yukon Diesel highest at $4,150; the median is $4,000.
By vehicle class: Standard SUVs (3), Standard pickup trucks (2).
By make: Chevrolet (3), GMC (2).
All 5 models ranked
Annual fuel cost in the file is based on 15,000 miles a year, 55% city and 45% highway driving, and the fuel prices that fueleconomy.gov published at the time of the release (the same prices for every model year).
| Rank | Model | Make | Vehicle class | Combined MPG | Annual fuel cost | CO2 g/mile | Versions |
|---|---|---|---|---|---|---|---|
| 1 | Chevrolet Silverado Diesel | Chevrolet | Standard pickup trucks | 25 | $3,850 | 402 | 6 |
| 2 | GMC Sierra Diesel | GMC | Standard pickup trucks | 25 | $3,850 | 402 | 4 |
| 3 | Chevrolet Tahoe Diesel | Chevrolet | Standard SUVs | 24 | $4,000 | 427 | 2 |
| 4 | Chevrolet Suburban Diesel | Chevrolet | Standard SUVs | 23 | $4,150 | 442 | 2 |
| 5 | GMC Yukon Diesel | GMC | Standard SUVs | 23 | $4,150 | 442 | 4 |
Each model is shown with its most efficient rated version. How the figures are prepared: methods and data.