- Newest year: 2020
- Gas
- Two-seaters
2017-2020 Mercedes-Benz SLC-Class MPG & Fuel Cost
4 model years · 23–27 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 9 of 10 two-seater configurations, MY2020. Ranked against all rated configurations, not sales-weighted.
2017-2020 Mercedes-Benz SLC-Class at a glance
The 2017-2020 Mercedes-Benz SLC-Class covers 4 model years in the EPA database (8 configurations in all), rated 23–27 MPG combined. The newest model year, 2020, costs about $3,010 a year to fuel for its most efficient version, the SLC300 2.0L 4-cyl turbo RWD (27 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2019 and 2020; 2018 repeat the values of the year before.
2017-2020 Mercedes-Benz SLC-Class by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2020 | Gas | 23–27 MPG | $3,010–$3,480 | Ratings changed |
| 2019 | Gas | 23–27 MPG | $3,000–$3,480 | Ratings changed |
| 2018 | Gas | 23–27 MPG | $2,930–$3,440 | Same EPA ratings as 2017 |
| 2017 | Gas | 23–27 MPG | $2,930–$3,440 | First year |
What the 2020 SLC300 2.0L 4-cyl turbo RWD costs to drive
Per month
$251
$3,010 a year ÷ 12
Per 25 miles
$5.02
Per 100 miles
$20.07
Five years
$15,050
5 × the yearly cost, prices held at today's level
vs the two-seater median
$1,350less a year
Class median $4,360 a year, MY2020
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2020 Mercedes-Benz SLC-Class MPG
Versus 2019: The most efficient configuration stays at 27 MPG. Its annual cost goes from $3,000 to $3,010, $10 more.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| SLC300 (Most efficient) | 2.0L 4-cyl turbo | RWD | 23 | 32 | 27 | $3,010 |
| AMG SLC43 | 3.0L 6-cyl turbo | RWD | 20 | 29 | 23 | $3,480 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2019 Mercedes-Benz SLC-Class MPG
23–27 MPG · $3,000–$3,480/yr
Versus 2018: The most efficient configuration stays at 27 MPG. Its annual cost goes from $2,930 to $3,000, $70 more.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| SLC300 (Most efficient) | 2.0L 4-cyl turbo | RWD | 23 | 32 | 27 | $3,000 |
| AMG SLC43 | 3.0L 6-cyl turbo | RWD | 20 | 29 | 23 | $3,480 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2018 Mercedes-Benz SLC-Class MPG
Same EPA ratings as 2017
EPA lists the same ratings for the 2018 Mercedes-Benz SLC-Class as for the 2017 model, so the configurations and costs are the ones in the 2017 section above.See 2017
2017 Mercedes-Benz SLC-Class MPG
23–27 MPG · $2,930–$3,440/yr
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| SLC300 (Most efficient) | 2.0L 4-cyl turbo | RWD | 25 | 32 | 27 | $2,930 |
| AMG SLC43 | 3.0L 6-cyl turbo | RWD | 20 | 29 | 23 | $3,440 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the SLC300 2.0L 4-cyl turbo RWD: $3,590 in California and $2,610 in Texas, a $980 difference.
- California $3,590
- Washington $3,380
- New York $2,970
- Florida $2,750
- Texas $2,610
Similar cars
Closest combined MPG among MY2020 two-seater models.
Generations
- 2017-2020
Frequently asked questions
What gas mileage does the 2017-2020 Mercedes-Benz SLC-Class get?
EPA rates the 2017-2020 Mercedes-Benz SLC-Class at 23–27 MPG combined across 8 configurations and 4 model years. The most efficient version, the 2020 SLC300 2.0L 4-cyl turbo RWD, is rated 27 MPG (23 city, 32 highway).
Which years had the best MPG in the 2017-2020 Mercedes-Benz SLC-Class?
Every model year of the 2017-2020 Mercedes-Benz SLC-Class tops out at 27 MPG combined, so no year is better than another.
Did EPA ratings change during the 2017-2020 Mercedes-Benz SLC-Class?
Yes. Ratings changed in 2019 and 2020. In 2018 the values repeat the year before.
How much does it cost to fuel a 2020 Mercedes-Benz SLC-Class per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the SLC300 2.0L 4-cyl turbo RWD costs about $3,010 a year. Across all 2 configurations the cost runs $3,010–$3,480 a year. That is a $470 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2020 Mercedes-Benz SLC-Class 100 miles?
About $20.07 per 100 miles for the SLC300 2.0L 4-cyl turbo RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $20.07 and $23.20 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2020 Mercedes-Benz SLC-Class more efficient in the city or on the highway?
The SLC300 2.0L 4-cyl turbo RWD is rated 23 city and 32 highway MPG, so it is more efficient on the highway, by 9 MPG.
How does the 2020 Mercedes-Benz SLC-Class compare with other two-seater configurations?
The SLC300 2.0L 4-cyl turbo RWD costs about $3,010 a year to fuel, $1,350 less than the class median of $4,360, and less than 9 of 10 two-seater configurations. The comparison covers all 83 rated two-seater configurations for MY2020, not weighted by sales.
Is the 2020 Mercedes-Benz SLC-Class different from the 2019 model?
The most efficient configuration stays at 27 MPG. Its annual cost goes from $3,000 to $3,010, $10 more. EPA lists 2 configurations for 2020 against 2 configurations for 2019. See the 2019 Mercedes-Benz SLC-Class for that year.