2023 head-to-head · Subcompact Car
2023 Audi S5 vs Mercedes-Benz SL-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.
The 2023 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 $3,703 for the 2023 Mercedes-Benz SL-Class (16 MPG). That's roughly $1,234 a year, or about $6,172 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
- Mercedes-Benz SL-Class
Side by side
| Audi S5 | Mercedes-Benz SL-Class | |
|---|---|---|
| $2,469 | Your annual fuel cost | $3,703 |
| 24 MPG | Combined efficiency | 16 MPG |
| 21 MPG | City | 14 MPG |
| 30 MPG | Highway | 22 MPG |
| 84 cu ft | Passenger volume | 76 cu ft |
| 11 cu ft | Cargo volume | 6 cu ft |
| 364 g/mi | Tailpipe CO₂ (g/mi) | 544 g/mi |
| 5/10 | EPA fuel economy score | 3/10 |
| 5/10 | EPA greenhouse gas score | 3/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| 4WD | 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 S5 vs Mercedes-Benz SL-Class across model years
- Audi S5
- Mercedes-Benz SL-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 S5 has more passenger space (84 vs. 76 cu ft); the Audi S5 has more cargo space (11 vs. 6 cu ft).
Among 31 2023 subcompact cars, the Audi S5 ranks 20th and the Mercedes-Benz SL-Class 31st for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2023 Audi S5 or the 2023 Mercedes-Benz SL-Class?
Measured by cost to drive, the Audi S5. The Audi S5 is rated 24 MPG combined and the Mercedes-Benz SL-Class 16 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2023 Audi S5 vs. the Mercedes-Benz SL-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,469 for the Audi S5 and $3,703 for the Mercedes-Benz SL-Class.
Which has more cargo space?
The Audi S5, with 11 cu ft of luggage volume versus 6 cu ft (EPA interior volume index).
More 2023 comparisons
Audi S5 vs…
Or compare the 2023 Audi S5 with anything else: