2015 head-to-head · Compact Car
2015 Audi S4 vs Mercedes-Benz CLS-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 2015 Mercedes-Benz CLS-Class 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 $2,821 for the 2015 Audi S4 (21 MPG). That's roughly $353 a year, or about $1,763 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 S4
- Mercedes-Benz CLS-Class
Side by side
| Audi S4 | Mercedes-Benz CLS-Class | |
|---|---|---|
| $2,821 | Your annual fuel cost | $2,469 |
| 21 MPG | Combined efficiency | 24 MPG |
| 18 MPG | City | 20 MPG |
| 28 MPG | Highway | 29 MPG |
| 90 cu ft | Passenger volume | 92 cu ft |
| 13 cu ft | Cargo volume | 11 cu ft |
| 413 g/mi | Tailpipe CO₂ (g/mi) | 377 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 5/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl supercharged | Engine / motor | 3.0L 6-cyl turbo |
| 7-speed dual-clutch | Transmission | 7-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 S4 vs Mercedes-Benz CLS-Class across model years
- Audi S4
- Mercedes-Benz CLS-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 S4 has more cargo space (13 vs. 11 cu ft).
Among 52 2015 compact cars, the Audi S4 ranks 50th and the Mercedes-Benz CLS-Class 47th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi S4 or the 2015 Mercedes-Benz CLS-Class?
Measured by cost to drive, the Mercedes-Benz CLS-Class. The Audi S4 is rated 21 MPG combined and the Mercedes-Benz CLS-Class 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi S4 vs. the Mercedes-Benz CLS-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,821 for the Audi S4 and $2,469 for the Mercedes-Benz CLS-Class.
Which has more cargo space?
The Audi S4, with 13 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Audi S4 vs Mercedes-Benz CLS-Class in other years
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