Mercedes-Benz SL-Class MPG by Year

By , Gas Mileage Calculators

Here's the official EPA Mercedes-Benz SL-Class MPG for every model year from 1994 to 2027.

Best 2026 SL-Class
22 MPG
2026 AMG SL43 (RWD)
Most efficient SL-Class ever
23 MPG
2017-2019 SL450
Best non-hybrid SL-Class
23 MPG
2017-2019 SL450, 3.0L 6-cylinder

SL-Class MPG by Year and Version

4 configurations

The EPA has rated 99 configurations of the SL-Class across gas and plug-in hybrid versions. Pick a year to see each engine and drivetrain.

EPA ratings for the 2026 Mercedes-Benz SL-Class
VersionEngineTransmissionDriveCityHwyCombinedEPA
AMG SL43Mild hybridPremium Gasoline2.0L 4-cylAuto 9-spdRWD192722View
SL680 MaybachPremium Gasoline4.0L 8-cylAuto 9-spdAWD132016View
AMG SL63 4matic PlusPremium Gasoline4.0L 8-cylAuto 9-spdAWD142116View
AMG SL55 4matic PlusPremium Gasoline4.0L 8-cylAuto 9-spdAWD142116View

Plug-in hybrid rows show the gas-only rating.

SL-Class MPG Over the Years

Each bar shows the range of combined MPG across every SL-Class configuration the EPA rated that year, from the thirstiest version to the most efficient. Hover or tap a year to see the numbers.

Mercedes-Benz SL-Class combined MPG range by model year
Gas engines onlyRange includes a hybrid

Years When SL-Class Fuel Economy Changed

Most years look a lot like the one before. These are the years where the EPA numbers moved in a way that matters if you're shopping for a used SL-Class.

How the SL-Class Compares

The EPA rated 9 minicompact cars for 2026. The best SL-Class version, at 22 MPG combined, ranks 4th of 9. Combined ratings in the class run from 17 to 30 MPG, with a median of 21. Plug-in hybrids and electric models are ranked separately.

Best combined rating for each minicompact car the EPA rated for 2026, top 5
RankModelCombined
1MINI Cooper30 MPG
1MINI John Cooper Works30 MPG
3Subaru BRZ25 MPG
4Mercedes-Benz SL-Class22 MPG
5Porsche 91121 MPG

What Does a SL-Class Cost to Fuel?

Pick a SL-Class, then enter your gas price and how much you drive. The math uses the EPA city and highway ratings, weighted by how much of your driving happens in each.

Yearly cost
Enter a price
Per month-
Gallons per year-
Cost per mile-
Your blended MPG-
Real-world results vary with driving style, weather, tire condition and maintenance.

SL-Class MPG Questions

Which SL-Class year gets the best gas mileage?

The 2017 to 2019 SL450 holds the top EPA rating at 23 MPG combined (20 city, 28 highway). Among 2026 models, the AMG SL43 is rated at 22 MPG combined.

What's the best gas mileage from a non-hybrid SL-Class?

The 2017 to 2019 SL450 with the 3.0L 6-cylinder and rear-wheel drive is rated at 23 MPG combined (20 city, 28 highway).

Is there still a gas-only SL-Class?

Yes. The 2026 SL-Class lineup includes 4 gas-only versions, rated 16 to 22 MPG combined.

Does all-wheel drive hurt SL-Class fuel economy?

Yes, noticeably. On the 2027 SL-Class, the best rear-wheel drive version is rated at 23 MPG combined and the best all-wheel drive version at 16 MPG.

Why doesn't my SL-Class match the EPA numbers?

EPA ratings come from standardized lab tests so every car is measured the same way. Your results depend on speed, climate, idling, cargo, tire pressure and upkeep. The ratings are best for comparing one car against another. To track your own numbers, try the MPG calculator.

Keep Going

Compare two vehiclesSee the yearly fuel cost gap between a SL-Class and another vehicle. Price a road tripWork out the fuel cost for a trip in your SL-Class on our sister site, FuelPriceCalculator.com. All Mercedes-Benz modelsRatings for the E-Class, C-Class, S-Class, GLE-Class and every other Mercedes-Benz. Mercedes-Benz S-Class MPGAnother Mercedes-Benz, rated 15 to 23 MPG combined for 2026. Mercedes-Benz G-Class MPGAnother Mercedes-Benz, rated 15 to 18 MPG combined for 2026. Porsche 911 MPGA minicompact car from Porsche, rated 15 to 21 MPG combined for 2026. Subaru BRZ MPGA minicompact car from Subaru, rated 22 to 25 MPG combined for 2026. Ferrari Roma MPGA minicompact car from Ferrari, rated 19 MPG combined for 2026.

Where These Numbers Come From

Cedrick Reese built this page from the EPA fuel economy file published on fueleconomy.gov. It has 99 ratings for the SL-Class from 1994 to 2027, and every one of them is shown in the table. Each row in the table links to the matching EPA vehicle record, so you can check any figure against the source. Ratings from before 2008 use the EPA's revised estimates, which put older vehicles on the same scale as newer ones. Plug-in hybrid figures in the table are the gas-only ratings, since those are the ones you can compare with a regular car. When the EPA posts an updated file with new model years or corrected ratings, this page is rebuilt from it. The cost calculator uses the gas price you enter rather than a national average, so the result fits where you live.

Ratings on this page come from the EPA file downloaded on October 1, 2026.

Sources