GMC models ranked by fuel economy, 2026
For model year 2026 the data rates 8 GMC models. The most efficient is GMC Sierra Electric at 68 combined and the least efficient is GMC Yukon at 17; the middle of the list sits at 22.5.
That is a spread of 51 from first to last; the leader's rating is 4.0 times the last model's.
The largest step between neighbouring ranks comes after GMC Sierra Electric, 1st: the next model, GMC Terrain, is 41 lower.
On annual fuel cost under the file's assumptions, GMC Sierra Electric is lowest at $1,100 and GMC Yukon Diesel highest at $4,150; the median is $3,350.
By vehicle class: Standard pickup trucks (4), Standard SUVs (3), Small SUVs (1).
By powertrain: Gasoline (5), Diesel (2), Electric (1).
MPGe is used for electric models: it is the electric equivalent of MPG, so the figures are comparable as energy efficiency.
All 8 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 | Vehicle class | Powertrain | Combined MPG | Annual fuel cost | CO2 g/mile | Versions |
|---|---|---|---|---|---|---|---|
| 1 | GMC Sierra Electric | Standard pickup trucks | Electric | 68 | $1,100 | 0 | 3 |
| 2 | GMC Terrain | Small SUVs | Gasoline | 27 | $2,500 | 329 | 3 |
| 3 | GMC Sierra Diesel | Standard pickup trucks | Diesel | 25 | $3,850 | 402 | 4 |
| 4 | GMC Yukon Diesel | Standard SUVs | Diesel | 23 | $4,150 | 442 | 4 |
| 5 | GMC Acadia | Standard SUVs | Gasoline | 22 | $3,050 | 404 | 2 |
| 6 | GMC Canyon | Standard pickup trucks | Gasoline | 20 | $3,350 | 443 | 5 |
| 7 | GMC Sierra | Standard pickup trucks | Gasoline | 20 | $3,350 | 464 | 18 |
| 8 | GMC Yukon | Standard SUVs | Gasoline | 17 | $3,950 | 530 | 8 |
Each model is shown with its most efficient rated version. How the figures are prepared: methods and data.