2027 head-to-head · Midsize & Large SUV
2027 Audi RS Q8 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 · 13 MPG
The 2027 Audi RS Q8 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 $4,558 for the 2027 Rolls-Royce Cullinan (13 MPG). That's roughly $855 a year, or about $4,273 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
- Audi RS Q8
- Rolls-Royce Cullinan
Side by side
| Audi RS Q8 | Rolls-Royce Cullinan | |
|---|---|---|
| $3,703 | Your annual fuel cost | $4,558 |
| 16 MPG | Combined efficiency | 13 MPG |
| 14 MPG | City | 11 MPG |
| 20 MPG | Highway | 18 MPG |
| 547 g/mi | Tailpipe CO₂ (g/mi) | 656 g/mi |
| 3/10 | EPA fuel economy score | 1/10 |
| 3/10 | EPA greenhouse gas score | 2/10 |
| Hybrid | 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.
Audi RS Q8 vs Rolls-Royce Cullinan across model years
- Audi RS Q8
- 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 58 2027 midsize & large SUVs, the Audi RS Q8 ranks 55th and the Rolls-Royce Cullinan 58th for lowest fuel cost.
The powertrains differ: the Audi RS Q8 is a full hybrid, while the Rolls-Royce Cullinan is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2027 Audi RS Q8 or the 2027 Rolls-Royce Cullinan?
Measured by cost to drive, the Audi RS Q8. The Audi RS Q8 is rated 16 MPG combined and the Rolls-Royce Cullinan 13 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2027 Audi RS Q8 vs. the Rolls-Royce Cullinan per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Audi RS Q8 and $4,558 for the Rolls-Royce Cullinan.
Audi RS Q8 vs Rolls-Royce Cullinan in other years
More 2027 comparisons
Audi RS Q8 vs…
Or compare the 2027 Audi RS Q8 with anything else: