2018 head-to-head · Subcompact Car
2018 Audi S5 vs BMW 6 Series
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2018 Audi S5 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,469 a year to fuel (24 MPG), versus $2,576 for the 2018 BMW 6 Series (23 MPG). That's roughly $107 a year, or about $537 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 S5
- BMW 6 Series
Side by side
| Audi S5 | BMW 6 Series | |
|---|---|---|
| $2,469 | Your annual fuel cost | $2,576 |
| 24 MPG | Combined efficiency | 23 MPG |
| 21 MPG | City | 20 MPG |
| 30 MPG | Highway | 29 MPG |
| 84 cu ft | Passenger volume | 88 cu ft |
| 13 cu ft | Cargo volume | 11 cu ft |
| 374 g/mi | Tailpipe CO₂ (g/mi) | 378 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed dual-clutch | 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 S5 vs BMW 6 Series across model years
- Audi S5
- BMW 6 Series
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 BMW 6 Series has more passenger space (88 vs. 84 cu ft); the Audi S5 has more cargo space (13 vs. 11 cu ft).
Among 44 2018 subcompact cars, the Audi S5 ranks 26th and the BMW 6 Series 28th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Audi S5 or the 2018 BMW 6 Series?
Measured by cost to drive, the Audi S5. The Audi S5 is rated 24 MPG combined and the BMW 6 Series 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Audi S5 vs. the BMW 6 Series per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,469 for the Audi S5 and $2,576 for the BMW 6 Series.
Which has more cargo space?
The Audi S5, with 13 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Audi S5 vs BMW 6 Series in other years
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