2026 · Midsize & Large SUV · Diesel
2026 Chevrolet Tahoe Diesel MPG & fuel economy
The 2026 Chevrolet Tahoe Diesel is a midsize or large SUV offered in 2 EPA-rated configurations. The most efficient version returns 24 MPG combined (22 city / 26 highway) on diesel. Across the lineup, combined ratings range from 22 to 24 MPG. Efficiency is unchanged from the 2025 model. Among 91 midsize & large SUVs rated for 2026, it ranks 48th for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $2,312 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2026 Chevrolet Tahoe Diesel's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 9.4 km/L in the city and 11.1 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 22 | 9.4 | 10.7 |
| Highway | 26 | 11.1 | 9.0 |
| Combined | 24 | 10.2 | 9.8 |
How it ranks among 2026 Midsize & Large SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Tahoe Diesel MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 3.0L 6-cyl turbo · 10-speed automatic Tahoe 2WD |
Diesel | 22 MPG | 26 MPG | 24 MPG | — | $2,312 |
| 4WD · 3.0L 6-cyl turbo · 10-speed automatic Tahoe 4WD |
Diesel | 20 MPG | 24 MPG | 22 MPG | — | $2,523 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 3.0L 6-cyl turbo
- Transmission
- 10-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 427 g/mi
- EPA fuel economy score
- 5/10
- EPA greenhouse gas score
- 4/10
2026 Chevrolet Tahoe Diesel vs. rivals
Compare the 2026 Tahoe Diesel
With any other car from any year, including other Tahoe Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2026 Chevrolet Tahoe (17 MPG)
Frequently asked questions
What is the gas mileage of the 2026 Chevrolet Tahoe Diesel?
Up to 24 MPG combined (22 city / 26 highway); ratings range from 22 to 24 MPG depending on configuration.
What fuel does the 2026 Chevrolet Tahoe Diesel use?
Diesel.
What is the fuel average in km/L for the 2026 Chevrolet Tahoe Diesel?
The 2026 Chevrolet Tahoe Diesel's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 9.4 km/L in the city and 11.1 km/L on the highway.
How much does it cost to fuel the 2026 Chevrolet Tahoe Diesel per year?
About $2,312 at 15,000 miles a year with $3.70/gal diesel fuel, or $15.42 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.