2020 head-to-head · Midsize Car
2020 Audi S6 Hybrid vs Bentley Mulsanne
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 · 2.9L 6-cyl turbo · 8-speed automatic · 22 MPG
RWD · 6.8L 8-cyl turbo · 8-speed automatic · 12 MPG
The 2020 Audi S6 Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,693 a year to fuel (22 MPG), versus $4,938 for the 2020 Bentley Mulsanne (12 MPG). That's roughly $2,244 a year, or about $11,222 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 S6 Hybrid
- Bentley Mulsanne
Side by side
| Audi S6 Hybrid | Bentley Mulsanne | |
|---|---|---|
| $2,693 | Your annual fuel cost | $4,938 |
| 22 MPG | Combined efficiency | 12 MPG |
| 18 MPG | City | 10 MPG |
| 28 MPG | Highway | 16 MPG |
| 98 cu ft | Passenger volume | 101 cu ft |
| 16 cu ft | Cargo volume | 11 cu ft |
| 410 g/mi | Tailpipe CO₂ (g/mi) | 749 g/mi |
| 4/10 | EPA fuel economy score | 1/10 |
| 4/10 | EPA greenhouse gas score | 1/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.9L 6-cyl turbo | Engine / motor | 6.8L 8-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | Drivetrain | RWD |
✓ 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 S6 Hybrid vs Bentley Mulsanne across model years
- Audi S6 Hybrid
- Bentley Mulsanne
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
Per EPA interior volume figures, the Audi S6 Hybrid has more cargo space (16 vs. 11 cu ft).
Among 64 2020 midsize cars, the Audi S6 Hybrid ranks 58th and the Bentley Mulsanne 63rd for lowest fuel cost.
The powertrains differ: the Audi S6 Hybrid is a full hybrid, while the Bentley Mulsanne is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2020 Audi S6 Hybrid or the 2020 Bentley Mulsanne?
Measured by cost to drive, the Audi S6 Hybrid. The Audi S6 Hybrid is rated 22 MPG combined and the Bentley Mulsanne 12 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Audi S6 Hybrid vs. the Bentley Mulsanne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,693 for the Audi S6 Hybrid and $4,938 for the Bentley Mulsanne.
Which has more cargo space?
The Audi S6 Hybrid, with 16 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
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