2018 head-to-head · Subcompact Car
2018 Audi S3 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.
AWD · 2.0L 4-cyl turbo · 7-speed dual-clutch · 25 MPG
The 2018 Audi S3 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,370 a year to fuel (25 MPG), versus $2,576 for the 2018 BMW 6 Series (23 MPG). That's roughly $206 a year, or about $1,030 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 S3
- BMW 6 Series
Side by side
| Audi S3 | BMW 6 Series | |
|---|---|---|
| $2,370 | Your annual fuel cost | $2,576 |
| 25 MPG | Combined efficiency | 23 MPG |
| 22 MPG | City | 20 MPG |
| 28 MPG | Highway | 29 MPG |
| 86 cu ft | Passenger volume | 88 cu ft |
| 10 cu ft | Cargo volume | 11 cu ft |
| 359 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 |
| 2.0L 4-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 7-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 S3 vs BMW 6 Series across model years
- Audi S3
- 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 cargo space (11 vs. 10 cu ft).
Among 44 2018 subcompact cars, the Audi S3 ranks 24th and the BMW 6 Series 28th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Audi S3 or the 2018 BMW 6 Series?
Measured by cost to drive, the Audi S3. The Audi S3 is rated 25 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 S3 vs. the BMW 6 Series per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,370 for the Audi S3 and $2,576 for the BMW 6 Series.
Which has more cargo space?
The BMW 6 Series, with 11 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
Audi S3 vs BMW 6 Series in other years
More 2018 comparisons
Audi S3 vs…
Or compare the 2018 Audi S3 with anything else: