2026 head-to-head · Midsize & Large SUV
2026 Bentley Bentayga vs Rolls-Royce Cullinan
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 · 6.7L 12-cyl turbo · 8-speed automatic · 14 MPG
The 2026 Bentley Bentayga is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $3,703 a year to fuel (16 MPG), versus $4,232 for the 2026 Rolls-Royce Cullinan (14 MPG). That's roughly $529 a year, or about $2,645 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
- Bentley Bentayga
- Rolls-Royce Cullinan
Side by side
| Bentley Bentayga | Rolls-Royce Cullinan | |
|---|---|---|
| $3,703 | Your annual fuel cost | $4,232 |
| 16 MPG | Combined efficiency | 14 MPG |
| 14 MPG | City | 12 MPG |
| 21 MPG | Highway | 19 MPG |
| 553 g/mi | Tailpipe CO₂ (g/mi) | 609 g/mi |
| 3/10 | EPA fuel economy score | 2/10 |
| 3/10 | EPA greenhouse gas score | 2/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 6.7L 12-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.
Bentley Bentayga vs Rolls-Royce Cullinan across model years
- Bentley Bentayga
- Rolls-Royce Cullinan
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 Bentley Bentayga ranks 86th and the Rolls-Royce Cullinan 91st for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Bentley Bentayga or the 2026 Rolls-Royce Cullinan?
Measured by cost to drive, the Bentley Bentayga. The Bentley Bentayga is rated 16 MPG combined and the Rolls-Royce Cullinan 14 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Bentley Bentayga vs. the Rolls-Royce Cullinan per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Bentley Bentayga and $4,232 for the Rolls-Royce Cullinan.
Bentley Bentayga vs Rolls-Royce Cullinan in other years
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