2018 Mercedes-Benz C-Class
Fuel economy, running costs, emissions and safety · from U.S. EPA and NHTSA data
The 2018 Mercedes-Benz C-Class is sold in the U.S. with gasoline and plug-in hybrid power. The EPA lists 16 configurations for this model year, with combined economy from 19 to 30 MPG and an estimated annual fuel cost of $2,650 to $4,200 at 15,000 miles.
Key numbers
| Model year | 2018 |
|---|---|
| Vehicle class | Subcompact Cars |
| Fuel type(s) | Gasoline, Plug-in Hybrid |
| Combined economy | 19-30 MPG |
| Best / worst combined | 30 / 19 MPG |
| Annual fuel cost | $2,650-$4,200 |
| Tailpipe CO₂ | 215-468 g/mi |
| EPA smog rating | 5-7 / 10 |
| NHTSA overall | 5 / 5 stars |
What it costs to fuel
Across its configurations, the 2018 C-Class costs about $2,650 to $4,200 a year to fuel at the EPA's 15,000-mile basis, averaging roughly $3,562. Over five years that is about $17,812 in fuel alone before maintenance, insurance and depreciation — which is why the running cost, not just the price, decides what a car really costs.
Relative to an average new vehicle, this C-Class configuration spends about $250 more on fuel over five years.
For context, the average combined economy of subcompact cars in this dataset is about 27 MPG. The C-Class sits roughly 3 MPG below that mark at its midpoint, making it thirstier than average for its EPA class.
Configurations and fuel economy
| Version | Engine | Drive | Trans | Fuel | Combined | Annual fuel |
|---|---|---|---|---|---|---|
| C350e | 2.0L 4-cyl turbo | Rear-Wheel | Automatic | Plug-in Hybrid | 30 MPG | $2,650 |
| C300 | 2.0L 4-cyl turbo | Rear-Wheel | Automatic | Gasoline | 27 MPG | $2,950 |
| C300 4matic | 2.0L 4-cyl turbo | 4-Wheel | Automatic | Gasoline | 26 MPG | $3,050 |
| C300 Coupe | 2.0L 4-cyl turbo | Rear-Wheel | Automatic | Gasoline | 25 MPG | $3,200 |
| C300 4matic Coupe | 2.0L 4-cyl turbo | 4-Wheel | Automatic | Gasoline | 25 MPG | $3,200 |
| C300 4matic Convertible | 2.0L 4-cyl turbo | 4-Wheel | Automatic | Gasoline | 25 MPG | $3,200 |
| C300 Convertible | 2.0L 4-cyl turbo | Rear-Wheel | Automatic | Gasoline | 25 MPG | $3,200 |
| AMG C43 4matic | 3.0L 6-cyl turbo | 4-Wheel | Automatic | Gasoline | 23 MPG | $3,450 |
| AMG C43 4matic Coupe | 3.0L 6-cyl turbo | 4-Wheel | Automatic | Gasoline | 22 MPG | $3,650 |
| AMG C43 4matic Convertible | 3.0L 6-cyl turbo | 4-Wheel | Automatic | Gasoline | 22 MPG | $3,650 |
| AMG C63 | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 20 MPG | $4,000 |
| AMG C63 S | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 20 MPG | $4,000 |
| AMG C63 S Convertible | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 19 MPG | $4,200 |
| AMG C63 Convertible | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 19 MPG | $4,200 |
| AMG C63 S Coupe | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 19 MPG | $4,200 |
| AMG C63 Coupe | 4.0L 8-cyl turbo | Rear-Wheel | Automatic | Gasoline | 19 MPG | $4,200 |
Emissions, safety and size
The 2018 C-Class records tailpipe CO₂ of 215-468 g/mi, an EPA smog rating of 5-7 out of 10, a 5-star NHTSA overall crash rating, and an EPA electric range of 410 to 410 miles when running on battery. The EPA classifies it as subcompact cars.
Compare this car
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Data: U.S. EPA FuelEconomy.gov (public domain) and NHTSA SafetyRatings. Figures are EPA estimates; real-world results vary.