2025 head-to-head · Subcompact Car
2025 Audi S3 vs BMW 8 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 · 26 MPG
The 2025 Audi S3 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $2,469 for the 2025 BMW 8 Series (24 MPG). That's roughly $190 a year, or about $950 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 8 Series
Side by side
| Audi S3 | BMW 8 Series | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,469 |
| 26 MPG | Combined efficiency | 24 MPG |
| 23 MPG | City | 21 MPG |
| 31 MPG | Highway | 29 MPG |
| 87 cu ft | Passenger volume | 81 cu ft |
| 8 cu ft | Cargo volume | 15 cu ft |
| 344 g/mi | Tailpipe CO₂ (g/mi) | 368 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 8 Series across model years
- Audi S3
- BMW 8 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 Audi S3 has more passenger space (87 vs. 81 cu ft); the BMW 8 Series has more cargo space (15 vs. 8 cu ft).
Among 30 2025 subcompact cars, the Audi S3 ranks 14th and the BMW 8 Series 17th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2025 Audi S3 or the 2025 BMW 8 Series?
Measured by cost to drive, the Audi S3. The Audi S3 is rated 26 MPG combined and the BMW 8 Series 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Audi S3 vs. the BMW 8 Series per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the Audi S3 and $2,469 for the BMW 8 Series.
Which has more cargo space?
The BMW 8 Series, with 15 cu ft of luggage volume versus 8 cu ft (EPA interior volume index).
Audi S3 vs BMW 8 Series in other years
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