2018 · Compact Car · Gas
2018 Mercedes-Benz CLS-Class MPG & fuel economy
The 2018 Mercedes-Benz CLS-Class is a compact car offered in 3 EPA-rated configurations. The most efficient version returns 21 MPG combined (18 city / 26 highway) on premium gasoline. Across the lineup, combined ratings range from 18 to 21 MPG. Efficiency is unchanged from the 2017 model. Among 44 compact cars rated for 2018, it ranks 42nd for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2018 Mercedes-Benz CLS-Class's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 18 | 7.7 | 13.1 |
| Highway | 26 | 11.1 | 9.0 |
| Combined | 21 | 8.9 | 11.2 |
How it ranks among 2018 Compact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
CLS-Class MPG across model years
Full history →3 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 4.7L 8-cyl turbo · 9-speed automatic CLS550 |
Gas | 18 MPG | 26 MPG | 21 MPG | — | $2,821 |
| 4WD · 4.7L 8-cyl turbo · 9-speed automatic CLS550 4matic |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,962 |
| 4WD · 5.5L 8-cyl turbo · 7-speed automatic AMG CLS63 S 4matic |
Gas | 16 MPG | 22 MPG | 18 MPG | — | $3,292 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 4.7L 8-cyl turbo
- Transmission
- 9-speed automatic
- Drivetrain
- RWD
- Passenger volume
- 92 cu ft
- Cargo volume
- 11 cu ft
- Tailpipe CO₂
- 425 g/mi
- EPA fuel economy score
- 4/10
- EPA greenhouse gas score
- 4/10
2018 Mercedes-Benz CLS-Class vs. rivals
Compare the 2018 CLS-Class
With any other car from any year, including other CLS-Class model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2018 Mercedes-Benz CLS-Class?
Up to 21 MPG combined (18 city / 26 highway); ratings range from 18 to 21 MPG depending on configuration.
What fuel does the 2018 Mercedes-Benz CLS-Class use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2018 Mercedes-Benz CLS-Class?
The 2018 Mercedes-Benz CLS-Class's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
How much does it cost to fuel the 2018 Mercedes-Benz CLS-Class per year?
About $2,821 at 15,000 miles a year with $3.95/gal premium gas, or $18.81 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.