AutoSpecData

Mercedes-Benz SL-Class Engine Specifications

The 2027 Mercedes-Benz SL-Class is offered with 2.0L–6.0L engines in 8 and 4 and 6 and 12-cylinder form, per EPA fuel-economy records.

Latest model year (2027):

The Mercedes-Benz SL-Class is available with 8 4.0L and Automatic 9-spd (All-Wheel Drive).

Verifiedfueleconomy.gov · Verified August 11, 2026
OverviewMPGEngine SpecsFuel CostTransmissionDrivetrainVehicle ClassMaintenanceDimensionsCurb WeightEV Range

Mercedes-Benz SL-Class Engine Specs — All Years

YearTrimCylindersDispl.TransmissionDriveFuel TypeVehicle Class
2027Config 1 of 2Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2027Config 2 of 2Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2026Config 1 of 3Auto 9-spd, 4 cyl, 2.0 L42.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineMinicompact Cars
2026Config 2 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2026Config 3 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2025Config 1 of 3Auto 9-spd, 4 cyl, 2.0 L42.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineMinicompact Cars
2025Config 2 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2025Config 3 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2024Config 1 of 2Auto 9-spd, 4 cyl, 2.0 L42.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2024Config 2 of 2Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2023Config 1 of 3Auto 9-spd, 4 cyl, 2.0 L42.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2023Config 2 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2023Config 3 of 3Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2022Auto 9-spd, 8 cyl, 4.0 L84.0LAutomatic 9-spdAll-Wheel DrivePremium GasolineMinicompact Cars
2020Config 1 of 2Auto 9-spd, 6 cyl, 3.0 L63.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2020Config 2 of 2Auto 9-spd, 8 cyl, 4.7 L84.7LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2019Config 1 of 3Auto 7-spd, 8 cyl, 5.5 L85.5LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2019Config 2 of 3Auto 9-spd, 6 cyl, 3.0 L63.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2019Config 3 of 3Auto 9-spd, 8 cyl, 4.7 L84.7LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2018Config 1 of 4Auto 7-spd, 12 cyl, 6.0 L126.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2018Config 2 of 4Auto 7-spd, 8 cyl, 5.5 L85.5LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2018Config 3 of 4Auto 9-spd, 6 cyl, 3.0 L63.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2018Config 4 of 4Auto 9-spd, 8 cyl, 4.7 L84.7LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2017Config 1 of 4Auto 7-spd, 12 cyl, 6.0 L126.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2017Config 2 of 4Auto 7-spd, 8 cyl, 5.5 L85.5LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2017Config 3 of 4Auto 9-spd, 6 cyl, 3.0 L63.0LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2017Config 4 of 4Auto 9-spd, 8 cyl, 4.7 L84.7LAutomatic 9-spdRear-Wheel DrivePremium GasolineTwo Seaters
2016Config 1 of 4Auto 7-spd, 12 cyl, 6.0 L126.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2016Config 2 of 4Auto 7-spd, 6 cyl, 3.0 L63.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2016Config 3 of 4Auto 7-spd, 8 cyl, 4.7 L84.7LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2016Config 4 of 4Auto 7-spd, 8 cyl, 5.5 L85.5LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2015Config 1 of 4Auto 7-spd, 12 cyl, 6.0 L126.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2015Config 2 of 4Auto 7-spd, 6 cyl, 3.0 L63.0LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2015Config 3 of 4Auto 7-spd, 8 cyl, 4.7 L84.7LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters
2015Config 4 of 4Auto 7-spd, 8 cyl, 5.5 L85.5LAutomatic 7-spdRear-Wheel DrivePremium GasolineTwo Seaters

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Mercedes-Benz SL-Class data analysis

How Mercedes-Benz SL-Class engine displacement varies

Across 35 configurations recorded for the 2015 through 2027 Mercedes-Benz SL-Class, engine displacement runs from 2 litres to 6 litres. The strongest figure belongs to the 2026 Mercedes-Benz SL-Class (SIDI; Mild Hybrid) at 2 litres, and the weakest to the 2015 car (Auto 7-spd, 12 cyl, 6.0 L) at 6 litres — a spread of 67%. A gap that wide means the model year and configuration you buy matter more than the nameplate does: quoting a single number for the Mercedes-Benz SL-Class would be misleading.

What changed for 2027

Average engine displacement for the 2027 Mercedes-Benz SL-Class is 4 litres, against 3.3 litres for the 2026 car — it rose by 0.7 litres. Buyers who care most about this figure should look at the earlier model years in the table above before assuming newest is best.

How to read this Mercedes-Benz SL-Class data

This page lists every 2015 through 2027 Mercedes-Benz SL-Class record we hold for this measurement — 35 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.

Configurations behind these Mercedes-Benz SL-Class numbers

The 2015 through 2027 Mercedes-Benz SL-Class entries here cover the variants SIDI, SIDI; Mild Hybrid, SIDI; PHEV and Auto 7-spd, 12 cyl, 6.0 L. 2018 is the busiest model year in the record with 4 separate measured configurations, which is why a single quoted engine displacement figure for that year is rarely the one that matches the car in front of you. Match the row to the exact drivetrain, body style and engine on the window sticker or VIN before relying on the number, and use the comparison links below to see how those same configurations line up against rival models.

Where these Mercedes-Benz SL-Class figures come from

Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Mercedes-Benz SL-Class record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.

Frequently Asked Questions About SL-Class Engine Specs

What engine does the Mercedes-Benz SL-Class have?

The Mercedes-Benz SL-Class is available with 8 cylinder engines ranging up to 4.0L. Transmission and drivetrain options vary by trim. See the full table above.

Is the Mercedes-Benz SL-Class available with all-wheel drive?

Yes, the Mercedes-Benz SL-Class is available with all-wheel drive. Check the "Drive" column in the table above for specific trims.

View full Mercedes-Benz SL-Class specs

Engine Specs for other Mercedes-Benz models

Compare across every brand

All Mercedes-Benz SL-Class specifications

More Mercedes-Benz models

View all Mercedes-Benz models →

Browse other makes

Free tools people use next

No account needed
Decode any VINEngine, drivetrain & towing from a VINCompare car sizesOverlay two vehicles to scaleMaintenance scheduleService intervals + PDF exportBest MPG, rankedTop EPA combined MPG by class