2026 head-to-head · Midsize & Large SUV
2026 Aston Martin DBX 727 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.
4WD · 4.0L 8-cyl turbo · 9-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 2026 Aston Martin DBX 727 (16 MPG) costs about $3,703 a year to fuel and the 2026 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
- Aston Martin DBX 727
- Bentley Bentayga
Side by side
| Aston Martin DBX 727 | Bentley Bentayga | |
|---|---|---|
| $3,703 | Your annual fuel cost | $3,703 |
| 16 MPG | Combined efficiency | 16 MPG |
| 14 MPG | City | 14 MPG |
| 19 MPG | Highway | 21 MPG |
| 105 cu ft | Passenger volume | — |
| 29 cu ft | Cargo volume | — |
| 546 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 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 9-speed automatic | Transmission | 8-speed automatic |
| 4WD | 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.
Aston Martin DBX 727 vs Bentley Bentayga across model years
- Aston Martin DBX 727
- 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 91 2026 midsize & large SUVs, the Aston Martin DBX 727 ranks 90th and the Bentley Bentayga 86th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2026 Aston Martin DBX 727 vs. the Bentley Bentayga per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Aston Martin DBX 727 and $3,703 for the Bentley Bentayga.
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