2025 · Subcompact Car · Plug-in hybrid
2025 Mercedes-Benz SL-Class Plug-in Hybrid MPG & fuel economy
The 2025 Mercedes-Benz SL-Class Plug-in Hybrid is a subcompact car with one EPA-rated configuration. This plug-in hybrid covers about 11 miles on electricity (29 MPGe), then returns 18 MPG on gas. Among 30 subcompact cars rated for 2025, it ranks 22nd for lowest fuel cost. At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $2,770 a year to fuel.
What will it cost you?
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Fuel average
The 2025 Mercedes-Benz SL-Class Plug-in Hybrid's fuel average is 7.7 km/L (13.1 L/100 km), or 18 MPG combined: 6.8 km/L in the city and 9.4 km/L on the highway. On electricity it is rated 29 MPGe.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City (gas) | 16 | 6.8 | 14.7 |
| Highway (gas) | 22 | 9.4 | 10.7 |
| Combined (gas) | 18 | 7.7 | 13.1 |
How it ranks among 2025 Subcompact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| AWD · 4.0L 8-cyl turbo · 9-speed automatic AMG SL63 S E Performance |
Plug-in hybrid | 33 MPGe + 16 MPG | 25 MPGe + 22 MPG | 29 MPGe + 18 MPG | 350 mi | $2,770 |
Specs (most efficient configuration)
- Fuel
- Premium gas + electricity
- Engine / motor
- 4.0L 8-cyl turbo
- Transmission
- 9-speed automatic
- Drivetrain
- AWD
- Electricity use
- 43 kWh/100 mi
- All-electric range
- 11 mi
- Charge time (240V)
- 1.1 hrs
- Passenger volume
- 76 cu ft
- Cargo volume
- 2 cu ft
- Tailpipe CO₂
- 379 g/mi
- EPA fuel economy score
- 4/10
- EPA greenhouse gas score
- 5/10
2025 Mercedes-Benz SL-Class Plug-in Hybrid vs. rivals
Compare the 2025 SL-Class Plug-in Hybrid
With any other car from any year, including other SL-Class Plug-in Hybrid model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2025 Mercedes-Benz SL-Class (16 MPG), 2025 Mercedes-Benz SL-Class Hybrid (22 MPG)
Frequently asked questions
What is the gas mileage of the 2025 Mercedes-Benz SL-Class Plug-in Hybrid?
Up to 29 MPGe + 18 MPG combined.
What fuel does the 2025 Mercedes-Benz SL-Class Plug-in Hybrid use?
Premium gas + electricity (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2025 Mercedes-Benz SL-Class Plug-in Hybrid?
The 2025 Mercedes-Benz SL-Class Plug-in Hybrid's fuel average is 7.7 km/L (13.1 L/100 km), or 18 MPG combined: 6.8 km/L in the city and 9.4 km/L on the highway. On electricity it is rated 29 MPGe.
How much does it cost to fuel the 2025 Mercedes-Benz SL-Class Plug-in Hybrid per year?
About $2,770 at 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, or $18.46 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.