2025 head-to-head · Midsize & Large SUV
2025 Audi RS Q8 vs Bentley Bentayga
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 4.0L 8-cyl turbo · 8-speed automatic · 16 MPG
AWD · 4.0L 8-cyl turbo · 8-speed automatic · 16 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas, the most efficient 2025 Audi RS Q8 (16 MPG) costs about $3,703 a year to fuel and the 2025 Bentley Bentayga (16 MPG) about $3,703.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi RS Q8
- Bentley Bentayga
Side by side
| Audi RS Q8 | Bentley Bentayga | |
|---|---|---|
| $3,703 | Your annual fuel cost | $3,703 |
| 16 MPG | Combined efficiency | 16 MPG |
| 14 MPG | City | 14 MPG |
| 20 MPG | Highway | 21 MPG |
| 547 g/mi | Tailpipe CO₂ (g/mi) | 553 g/mi |
| 3/10 | EPA fuel economy score | 3/10 |
| 3/10 | EPA greenhouse gas score | 3/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | 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.
Audi RS Q8 vs Bentley Bentayga across model years
- Audi RS Q8
- Bentley Bentayga
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 94 2025 midsize & large SUVs, the Audi RS Q8 ranks 91st and the Bentley Bentayga 90th for lowest fuel cost.
The powertrains differ: the Audi RS Q8 is a full hybrid, while the Bentley Bentayga is a conventional gas model.
Frequently asked questions
How much does it cost to fuel the 2025 Audi RS Q8 vs. the Bentley Bentayga per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Audi RS Q8 and $3,703 for the Bentley Bentayga.
Audi RS Q8 vs Bentley Bentayga in other years
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