2017 head-to-head · Compact Car
2017 BMW 4 Series 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 2017 BMW 4 Series 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 $2,821 for the 2017 Mercedes-Benz CLS-Class (21 MPG). That's roughly $627 a year, or about $3,135 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
- BMW 4 Series
- Mercedes-Benz CLS-Class
Side by side
| BMW 4 Series | Mercedes-Benz CLS-Class | |
|---|---|---|
| $2,194 | Your annual fuel cost | $2,821 |
| 27 MPG | Combined efficiency | 21 MPG |
| 23 MPG | City | 18 MPG |
| 34 MPG | Highway | 26 MPG |
| 90 cu ft | Passenger volume | 92 cu ft |
| 9 cu ft | Cargo volume | 11 cu ft |
| 324 g/mi | Tailpipe CO₂ (g/mi) | 425 g/mi |
| 6/10 | EPA fuel economy score | 4/10 |
| 6/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 4.7L 8-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| RWD | 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.
BMW 4 Series vs Mercedes-Benz CLS-Class across model years
- BMW 4 Series
- 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 Mercedes-Benz CLS-Class has more cargo space (11 vs. 9 cu ft).
Among 50 2017 compact cars, the BMW 4 Series ranks 37th and the Mercedes-Benz CLS-Class 45th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2017 BMW 4 Series or the 2017 Mercedes-Benz CLS-Class?
Measured by cost to drive, the BMW 4 Series. The BMW 4 Series is rated 27 MPG combined and the Mercedes-Benz CLS-Class 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2017 BMW 4 Series vs. the Mercedes-Benz CLS-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,194 for the BMW 4 Series and $2,821 for the Mercedes-Benz CLS-Class.
Which has more cargo space?
The Mercedes-Benz CLS-Class, with 11 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
BMW 4 Series vs Mercedes-Benz CLS-Class in other years
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