AutoSpecData

Mercedes-Benz S-Class Fuel Economy (MPG)

What is the real-world gas mileage of a 2027 Mercedes-Benz S-Class?

The 2027 Mercedes-Benz S-Class gets up to 26 MPG combined (24 city / 30 highway) in EPA testing.

Latest model year (2027):

The Mercedes-Benz S-Class gets up to 23 MPG combined (20 city / 28 highway) in the Auto 9-spd, 6 cyl, 3.0 L trim.

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

Mercedes-Benz S-Class MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2027Config 1 of 4Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122014
2027Config 2 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202823
2027Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162419
2027Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152418
2026Config 1 of 4Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122015
2026Config 2 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202923
2026Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162720
2026Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172720
2025Config 1 of 6Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122015
2025Config 2 of 6Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline213124
2025Config 3 of 6Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202923
2025Config 4 of 6Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162720
2025Config 5 of 6Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172520
2025Config 6 of 6Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152318
2024Config 1 of 4Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122015
2024Config 2 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline213124
2024Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline182721
2024Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline182621
2023Config 1 of 5Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122014
2023Config 2 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202923
2023Config 3 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202823
2023Config 4 of 5Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162519
2023Config 5 of 5Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152518
2022Config 1 of 4Auto 9-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline122115
2022Config 2 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline213024
2022Config 3 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152418
2022Config 4 of 4Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162519
2021Config 1 of 7Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline202924
2021Config 2 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162620
2021Config 3 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172520
2021Config 4 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162419
2021Config 5 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162619
2021Config 6 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline142417
2021Config 7 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162620
2020Config 1 of 13Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2020Config 2 of 13Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132216
2020Config 3 of 13Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline212623
2020Config 4 of 13Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182822
2020Config 5 of 13Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline192822
2020Config 6 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2020Config 7 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2020Config 8 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2020Config 9 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152418
2020Config 10 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172720
2020Config 11 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2020Config 12 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2020Config 13 of 13Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162519
2019Config 1 of 15Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132216
2019Config 2 of 15Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2019Config 3 of 15Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2019Config 4 of 15Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline142116
2019Config 5 of 15Auto 9-spd, 4 cyl, 3.0 L4 3.0LPremium Gasoline212623
2019Config 6 of 15Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182822
2019Config 7 of 15Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline192822
2019Config 8 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2019Config 9 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2019Config 10 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152418
2019Config 11 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172720
2019Config 12 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2019Config 13 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2019Config 14 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162519
2019Config 15 of 15Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2018Config 1 of 14Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2018Config 2 of 14Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132216
2018Config 3 of 14Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2018Config 4 of 14Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline142116
2018Config 5 of 14Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline192822
2018Config 6 of 14Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182822
2018Config 7 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172720
2018Config 8 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2018Config 9 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2018Config 10 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2018Config 11 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162519
2018Config 12 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172620
2018Config 13 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152418
2018Config 14 of 14Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline172721
2017Config 1 of 12Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132216
2017Config 2 of 12Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2017Config 3 of 12Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132216
2017Config 4 of 12Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline142116
2017Config 5 of 12Auto 7-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline243026
2017Config 6 of 12Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318
2017Config 7 of 12Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318
2017Config 8 of 12Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline142217
2017Config 9 of 12Auto 9-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline162520
2017Config 10 of 12Auto 9-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline182621
2017Config 11 of 12Auto 9-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline172520
2017Config 12 of 12Auto 9-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline172520
2016Config 1 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline142116
2016Config 2 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132015
2016Config 3 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132015
2016Config 4 of 9Auto 7-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline243026
2016Config 5 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline162619
2016Config 6 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline162419
2016Config 7 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline172620
2016Config 8 of 9Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318
2016Config 9 of 9Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318
2015Config 1 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132116
2015Config 2 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132015
2015Config 3 of 9Auto 7-spd, 12 cyl, 6.0 L12 6.0LPremium Gasoline132015
2015Config 4 of 9Auto 7-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline243026
2015Config 5 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline162619
2015Config 6 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline162419
2015Config 7 of 9Auto 7-spd, 8 cyl, 4.7 L8 4.7LPremium Gasoline172620
2015Config 8 of 9Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318
2015Config 9 of 9Auto 7-spd, 8 cyl, 5.5 L8 5.5LPremium Gasoline152318

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 S-Class data analysis

How Mercedes-Benz S-Class combined fuel economy varies

Across 106 configurations recorded for the 2015 through 2027 Mercedes-Benz S-Class, combined fuel economy runs from 14 MPG to 26 MPG. The strongest figure belongs to the 2015 Mercedes-Benz S-Class (Auto 7-spd, 6 cyl, 3.0 L) at 26 MPG, and the weakest to the 2027 car (Auto 9-spd, 12 cyl, 6.0 L) at 14 MPG — a spread of 86%. 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 S-Class would be misleading.

What changed for 2027

Average combined fuel economy for the 2027 Mercedes-Benz S-Class is 18.5 MPG, against 19.5 MPG for the 2026 car — it fell by 1 MPG. 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 S-Class data

This page lists every 2015 through 2027 Mercedes-Benz S-Class record we hold for this measurement — 106 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 S-Class numbers

The 2015 through 2027 Mercedes-Benz S-Class entries here cover variants including Auto 9-spd, 12 cyl, 6.0 L, Auto 9-spd, 6 cyl, 3.0 L, Auto 9-spd, 8 cyl, 4.0 L, Auto 7-spd, 12 cyl, 6.0 L, Auto 9-spd, 4 cyl, 3.0 L, Auto 7-spd, 6 cyl, 3.0 L, Auto 7-spd, 8 cyl, 5.5 L and Auto 9-spd, 8 cyl, 4.7 L. 2019 is the busiest model year in the record with 15 separate measured configurations, which is why a single quoted combined fuel economy 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 S-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 S-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.

Official Factory Specs vs. AutoSpecData Expert Benchmarks

The EPA highway loop never holds interstate speed. Here is what the same engine does when you sit on the cruise control.

Cruise speedEPA highway specAutoSpecData adjusted MPGFuel you lose
60 mph31 MPG31 MPG0%
65 mph31 MPG28.9 MPG7%
70 mph31 MPG26.9 MPG13%
75 mph31 MPG25.1 MPG19%
80 mph31 MPG23.4 MPG25%

Our Real-World Speed MPG Adjuster re-scales the Mercedes-Benz S-Class EPA highway result with a quadratic drag term (mpg = hwy ÷ (1 + k·(v² − 60²)/60²), k = 0.55 for trucks, SUVs and vans, 0.42 for cars). Wind, roof racks, and a heavy right foot make it worse, never better.

Frequently Asked Questions About S-Class MPG

What is the MPG of the Mercedes-Benz S-Class?

The Mercedes-Benz S-Class gets up to 26 MPG combined (24 city / 30 highway) in the 2027 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Mercedes-Benz S-Class trim has the best fuel economy?

The Auto 7-spd, 6 cyl, 3.0 L trim offers the best combined fuel economy at 26 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

View full Mercedes-Benz S-Class specs

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