2027 head-to-head · Midsize & Large SUV
2027 Chevrolet Tahoe Diesel vs Subaru Ascent
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2027 Subaru Ascent is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, it costs about $2,114 a year to fuel (22 MPG), versus $2,312 for the 2027 Chevrolet Tahoe Diesel (24 MPG). That's roughly $199 a year, or about $994 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Chevrolet Tahoe Diesel
- Subaru Ascent
Side by side
| Chevrolet Tahoe Diesel | Subaru Ascent | |
|---|---|---|
| $2,312 | Your annual fuel cost | $2,114 |
| 24 MPG | Combined efficiency | 22 MPG |
| 22 MPG | City | 19 MPG |
| 26 MPG | Highway | 26 MPG |
| 427 g/mi | Tailpipe CO₂ (g/mi) | 405 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Diesel | Powertrain | Gas |
| Diesel | Fuel | Regular gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 2.4L 4-cyl turbo |
| 10-speed automatic | Transmission | CVT |
| RWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Chevrolet Tahoe Diesel vs Subaru Ascent across model years
- Chevrolet Tahoe Diesel
- Subaru Ascent
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 58 2027 midsize & large SUVs, the Chevrolet Tahoe Diesel ranks 28th and the Subaru Ascent 24th for lowest fuel cost.
The powertrains differ: the Chevrolet Tahoe Diesel is a diesel, while the Subaru Ascent is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2027 Chevrolet Tahoe Diesel or the 2027 Subaru Ascent?
Measured by cost to drive, the Subaru Ascent. The Chevrolet Tahoe Diesel is rated 24 MPG combined and the Subaru Ascent 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2027 Chevrolet Tahoe Diesel vs. the Subaru Ascent per year?
At 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, about $2,312 for the Chevrolet Tahoe Diesel and $2,114 for the Subaru Ascent.
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