2020 Mercedes-Benz CLS-Class
Fuel economy, running costs, emissions and safety · from U.S. EPA and NHTSA data
The 2020 Mercedes-Benz CLS-Class is sold in the U.S. with hybrid power. The EPA lists 3 configurations for this model year, with combined economy from 23 to 26 MPG and an estimated annual fuel cost of $3,050 to $3,450 at 15,000 miles.
Key numbers
| Model year | 2020 |
|---|---|
| Vehicle class | Compact Cars |
| Fuel type(s) | Hybrid |
| Combined economy | 23-26 MPG |
| Best / worst combined | 26 / 23 MPG |
| Annual fuel cost | $3,050-$3,450 |
| Tailpipe CO₂ | 334-379 g/mi |
| EPA smog rating | 6-6 / 10 |
What it costs to fuel
Across its configurations, the 2020 CLS-Class costs about $3,050 to $3,450 a year to fuel at the EPA's 15,000-mile basis, averaging roughly $3,183. Over five years that is about $15,917 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 CLS-Class configuration spends about $3,750 more on fuel over five years.
For context, the average combined economy of compact cars in this dataset is about 29 MPG. The CLS-Class sits roughly 4 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 |
|---|---|---|---|---|---|---|
| CLS450 | 3.0L 6-cyl turbo | Rear-Wheel | Automatic | Hybrid | 26 MPG | $3,050 |
| CLS450 4matic | 3.0L 6-cyl turbo | 4-Wheel | Automatic | Hybrid | 26 MPG | $3,050 |
| AMG CLS53 4matic Plus | 3.0L 6-cyl | 4-Wheel | Automatic | Hybrid | 23 MPG | $3,450 |
Emissions, safety and size
The 2020 CLS-Class records tailpipe CO₂ of 334-379 g/mi, an EPA smog rating of 6-6 out of 10. The EPA classifies it as compact 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.