2022 head-to-head · Subcompact Car
2022 Audi S3 vs Mercedes-Benz C-Class
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 · 27 MPG
The 2022 Audi S3 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,194 a year to fuel (27 MPG), versus $2,370 for the 2022 Mercedes-Benz C-Class (25 MPG). That's roughly $176 a year, or about $878 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
- Mercedes-Benz C-Class
Side by side
| Audi S3 | Mercedes-Benz C-Class | |
|---|---|---|
| $2,194 | Your annual fuel cost | $2,370 |
| 27 MPG | Combined efficiency | 25 MPG |
| 23 MPG | City | 22 MPG |
| 32 MPG | Highway | 31 MPG |
| 86 cu ft | Passenger volume | 79 cu ft |
| 10 cu ft | Cargo volume | 10 cu ft |
| 331 g/mi | Tailpipe CO₂ (g/mi) | 350 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | Transmission | 9-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 S3 vs Mercedes-Benz C-Class across model years
- Audi S3
- Mercedes-Benz C-Class
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 (86 vs. 79 cu ft).
Among 34 2022 subcompact cars, the Audi S3 ranks 14th and the Mercedes-Benz C-Class 18th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2022 Audi S3 or the 2022 Mercedes-Benz C-Class?
Measured by cost to drive, the Audi S3. The Audi S3 is rated 27 MPG combined and the Mercedes-Benz C-Class 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2022 Audi S3 vs. the Mercedes-Benz C-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,194 for the Audi S3 and $2,370 for the Mercedes-Benz C-Class.
Audi S3 vs Mercedes-Benz C-Class in other years
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