- Newest year: 2023
- Hybrid
- Small cars
2023 Mercedes-Benz CLS-Class MPG & Fuel Cost
1 configuration · 25 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 5 of 10 small car configurations, MY2023. Ranked against all rated configurations, not sales-weighted.
2023 Mercedes-Benz CLS-Class at a glance
The 2023 Mercedes-Benz CLS-Class has 1 configuration in the EPA database, rated 25 MPG combined. The most efficient is the CLS450 4matic 3.0L 6-cyl turbo AWD at 25 MPG, which costs about $3,240 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The CLS450 4matic 3.0L 6-cyl turbo AWD costs less to fuel than 5 of 10 small car configurations rated for MY2023 (class median $3,280 a year).
What the 2023 CLS450 4matic 3.0L 6-cyl turbo AWD costs to drive
Per month
$270
$3,240 a year ÷ 12
Per 25 miles
$5.40
Per 100 miles
$21.60
Five years
$16,200
5 × the yearly cost, prices held at today's level
vs the small car median
$40less a year
Class median $3,280 a year, MY2023
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2023 Mercedes-Benz CLS-Class MPG
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLS450 4matic (Most efficient) | 3.0L 6-cyl turbo | AWD | 22 | 30 | 25 | $3,240 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the CLS450 4matic 3.0L 6-cyl turbo AWD: $3,860 in California and $2,810 in Texas, a $1,050 difference.
- California $3,860
- Washington $3,630
- New York $3,200
- Florida $2,950
- Texas $2,810
Similar cars
Closest combined MPG among MY2023 small car models.
Generations
Frequently asked questions
How does the 2023 Mercedes-Benz CLS-Class compare with the previous generation?
The previous generation (2022 Mercedes-Benz CLS-Class) is rated 25 MPG combined and costs $3,240 a year to fuel; the 2023 model is rated 25 MPG and costs $3,240 a year.
What gas mileage does the 2023 Mercedes-Benz CLS-Class get?
EPA rates the 2023 Mercedes-Benz CLS-Class at 25 MPG combined across 1 configuration. The most efficient, the CLS450 4matic 3.0L 6-cyl turbo AWD, is rated 25 MPG combined (22 city / 30 highway).
How much does it cost to fuel a 2023 Mercedes-Benz CLS-Class per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the CLS450 4matic 3.0L 6-cyl turbo AWD costs about $3,240 a year. Across all 1 configuration the cost runs $3,240 a year.
How much does it cost to drive a 2023 Mercedes-Benz CLS-Class 100 miles?
About $21.60 per 100 miles for the CLS450 4matic 3.0L 6-cyl turbo AWD at premium gasoline $5.36/gal (U.S. average, Sep 2026). That is the annual cost over 15,000 miles divided by 150.
Is the 2023 Mercedes-Benz CLS-Class more efficient in the city or on the highway?
The CLS450 4matic 3.0L 6-cyl turbo AWD is rated 22 city and 30 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2023 Mercedes-Benz CLS-Class compare with other small car configurations?
The CLS450 4matic 3.0L 6-cyl turbo AWD costs about $3,240 a year to fuel, $40 less than the class median of $3,280, and less than 5 of 10 small car configurations. The comparison covers all 288 rated small car configurations for MY2023, not weighted by sales.
Is the 2023 Mercedes-Benz CLS-Class different from the 2022 model?
The most efficient configuration stays at 25 MPG. Its annual cost stays at $3,240. EPA lists 1 configuration for 2023 against 1 configuration for 2022. See the 2022 Mercedes-Benz CLS-Class for that year.