2018 · Subcompact Car · Gas
2018 Mercedes-Benz C-Class MPG & fuel economy
The 2018 Mercedes-Benz C-Class is a subcompact car offered in 12 EPA-rated configurations. The most efficient version returns 27 MPG combined (24 city / 33 highway) on premium gasoline. Across the lineup, combined ratings range from 19 to 27 MPG. That's down 1 MPG from the 2017 model. Among 44 subcompact cars rated for 2018, it ranks 17th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,194 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 C-Class's fuel average is 11.5 km/L (8.7 L/100 km), or 27 MPG combined: 10.2 km/L in the city and 14.0 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 24 | 10.2 | 9.8 |
| Highway | 33 | 14.0 | 7.1 |
| Combined | 27 | 11.5 | 8.7 |
How it ranks among 2018 Subcompact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
C-Class MPG across model years
Full history →12 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 2.0L 4-cyl turbo · 9-speed automatic C300 |
Gas | 24 MPG | 33 MPG | 27 MPG | — | $2,194 |
| 4WD · 2.0L 4-cyl turbo · 9-speed automatic C300 4matic |
Gas | 23 MPG | 32 MPG | 26 MPG | — | $2,279 |
| RWD · 2.0L 4-cyl turbo · 9-speed automatic C300 Coupe |
Gas | 22 MPG | 30 MPG | 25 MPG | — | $2,370 |
| 4WD · 2.0L 4-cyl turbo · 9-speed automatic C300 4matic Coupe |
Gas | 22 MPG | 30 MPG | 25 MPG | — | $2,370 |
| 4WD · 2.0L 4-cyl turbo · 9-speed automatic C300 4matic Convertible |
Gas | 22 MPG | 29 MPG | 25 MPG | — | $2,370 |
| RWD · 2.0L 4-cyl turbo · 9-speed automatic C300 Convertible |
Gas | 22 MPG | 29 MPG | 25 MPG | — | $2,370 |
| 4WD · 3.0L 6-cyl turbo · 9-speed automatic AMG C43 4matic |
Gas | 20 MPG | 27 MPG | 23 MPG | — | $2,576 |
| 4WD · 3.0L 6-cyl turbo · 9-speed automatic AMG C43 4matic Coupe |
Gas | 20 MPG | 27 MPG | 22 MPG | — | $2,693 |
| 4WD · 3.0L 6-cyl turbo · 9-speed automatic AMG C43 4matic Convertible |
Gas | 19 MPG | 26 MPG | 22 MPG | — | $2,693 |
| RWD · 4.0L 8-cyl turbo · 7-speed automatic AMG C63 |
Gas | 18 MPG | 24 MPG | 20 MPG | — | $2,962 |
| RWD · 4.0L 8-cyl turbo · 7-speed automatic AMG C63 S Convertible |
Gas | 17 MPG | 22 MPG | 19 MPG | — | $3,118 |
| RWD · 4.0L 8-cyl turbo · 7-speed automatic AMG C63 S Coupe |
Gas | 17 MPG | 23 MPG | 19 MPG | — | $3,118 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 2.0L 4-cyl turbo
- Transmission
- 9-speed automatic
- Drivetrain
- RWD
- Passenger volume
- 90 cu ft
- Cargo volume
- 13 cu ft
- Tailpipe CO₂
- 324 g/mi
- EPA fuel economy score
- 6/10
- EPA greenhouse gas score
- 6/10
2018 Mercedes-Benz C-Class vs. rivals
Compare the 2018 C-Class
With any other car from any year, including other C-Class model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2018 Mercedes-Benz C-Class Plug-in Hybrid (51 MPGe + 30 MPG)
Frequently asked questions
What is the gas mileage of the 2018 Mercedes-Benz C-Class?
Up to 27 MPG combined (24 city / 33 highway); ratings range from 19 to 27 MPG depending on configuration.
What fuel does the 2018 Mercedes-Benz C-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 C-Class?
The 2018 Mercedes-Benz C-Class's fuel average is 11.5 km/L (8.7 L/100 km), or 27 MPG combined: 10.2 km/L in the city and 14.0 km/L on the highway.
How much does it cost to fuel the 2018 Mercedes-Benz C-Class per year?
About $2,194 at 15,000 miles a year with $3.95/gal premium gas, or $14.63 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.