GMC · Standard SUVs · Diesel
GMC Yukon Diesel: MPG and annual fuel cost, 2026
In model year 2026 the GMC Yukon Diesel is rated at 23 MPG combined, tied for 35th of 90 standard SUVs, in the upper half.
- 23MPG combinedtied 35th of 90 in class
- $4,150a year in fueltied 71st of 90 in class
- 442g/mile CO2
Where it stands
The standard SUVs rated for 2026 run from 14 to 115 MPG, with a median of 22.5 MPG.
Across every class it is tied for 4th of 5 diesel models, in the bottom quarter.
GMC has 8 models in the 2026 data. This one ranks 4th of them on combined rating, against a make median of 22.5 MPG.
In its class, just ahead of it is the Chevrolet Tahoe Diesel at 24 MPG and just behind it is the Audi Q7 at 22 MPG.
Diesel versions burn diesel fuel, which the fuel price table of the source lists at $6.38 a gallon against $4.47 for regular gasoline, so a diesel needs a larger MPG advantage to cost less to fuel.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and diesel at $6.38 per gallon, fuelling the most efficient version comes to about $4,150 a year. That is $775 more than the standard SUVs median of $3,375, which makes it tied for 71st of 90 standard SUVs, in the bottom quarter.
Tailpipe CO2 is 442 g/mile, 55 g/mile above the standard SUVs median of 387.
Rated versions
In the city the most efficient version is rated 21 and on the highway 26, 5 better on the open road. 4 versions are rated for 2026. The most efficient, Yukon 2WD: 3.0 L, 6 cyl, Automatic 10-spd, RWD, gets 23 MPG; the least efficient listed, Yukon XL 4WD: 3.0 L, 6 cyl, Automatic 10-spd, 4WD, gets 22 MPG, a gap of 1 MPG. With the file's assumptions that gap is worth about $200 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| Yukon 2WD: 3.0 L, 6 cyl, Automatic 10-spd, RWD | 23 | 21 | 26 | $4,150 | 442 |
| Yukon XL 2WD: 3.0 L, 6 cyl, Automatic 10-spd, RWD | 23 | 21 | 26 | $4,150 | 442 |
| Yukon 4WD: 3.0 L, 6 cyl, Automatic 10-spd, 4WD | 22 | 20 | 24 | $4,350 | 460 |
| Yukon XL 4WD: 3.0 L, 6 cyl, Automatic 10-spd, 4WD | 22 | 20 | 24 | $4,350 | 460 |
Year by year
The GMC Yukon Diesel is in the data for 6 of the 8 model years from 2019 to 2026. Its best combined rating is 23 MPG in both 2021 and 2026.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 4 | 23 | 22 | $4,150 | 442 | 22.5 |
| 2025 | 4 | 23 | 22 | $4,150 | 442 | 22.5 |
| 2024 | 4 | 23 | 22 | $4,150 | 442 | 22 |
| 2023 | 4 | 23 | 22 | $4,150 | 442 | 21 |
| 2022 | 4 | 23 | 22 | $4,150 | 442 | 21 |
| 2021 | 4 | 23 | 22 | $4,150 | 437 | 20.5 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Jeep Grand Cherokee | Gasoline | 23 | $2,900 | 2026 |
| Jeep Grand Cherokee Plug-in hybrid | Plug-in hybrid | 23 | $2,900 | 2026 |
| Lexus TX | Gasoline | 23 | $3,550 | 2026 |
| Mercedes-Benz GLE-Class Hybrid | Hybrid | 23 | $3,550 | 2026 |
| Toyota Land Cruiser Hybrid | Hybrid | 23 | $3,550 | 2026 |
Rated almost identically and covered by this page:
- Chevrolet Suburban Diesel 23 MPG, $4,150 a year, 2 versions, last rated 2026
- Chevrolet Tahoe Diesel 24 MPG, $4,000 a year, 2 versions, last rated 2026
Compare and rank
Rankings: Standard SUVs, Diesel, GMC.
Data: US EPA and DOE, as prepared in methods and data.