AutoSpecData

Mercedes-Benz GLC-Class Fuel Economy (MPG)

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

The 2027 Mercedes-Benz GLC-Class gets up to 29 MPG combined (26 city / 33 highway) in EPA testing.

Latest model year (2027):

The Mercedes-Benz GLC-Class gets up to 27 MPG combined (24 city / 32 highway) in the Auto 9-spd, 4 cyl, 2.0 L trim.

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

Mercedes-Benz GLC-Class MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2027Config 1 of 2Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2027Config 2 of 2Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2026Config 1 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192522
2026Config 2 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2026Config 3 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2026Config 4 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192622
2026Config 5 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2025Config 1 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192120
2025Config 2 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2025Config 3 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2025Config 4 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192521
2025Config 5 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline182421
2025Config 6 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline232825
2025Config 7 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192120
2025Config 8 of 8Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2024Config 1 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline243026
2024Config 2 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline192521
2024Config 3 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline182421
2024Config 4 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline263329
2024Config 5 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2023Config 1 of 4Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline253228
2023Config 2 of 4Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline233126
2023Config 3 of 4Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline202622
2023Config 4 of 4Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline172420
2022Config 1 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212723
2022Config 2 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222724
2022Config 3 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824
2022Config 4 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182521
2022Config 5 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline162419
2021Config 1 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212823
2021Config 2 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222925
2021Config 3 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222824
2021Config 4 of 7Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182420
2021Config 5 of 7Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline172420
2021Config 6 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152217
2021Config 7 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152217
2020Config 1 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222924
2020Config 2 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline232825
2020Config 3 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824
2020Config 4 of 7Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824
2020Config 5 of 7Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182421
2020Config 6 of 7Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182421
2020Config 7 of 7Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162218
2019Config 1 of 9Auto 7-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline242725
2019Config 2 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222724
2019Config 3 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222724
2019Config 4 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212723
2019Config 5 of 9Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline192421
2019Config 6 of 9Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline192521
2019Config 7 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162218
2019Config 8 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162218
2019Config 9 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162218
2018Config 1 of 9Auto 7-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline242725
2018Config 2 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222824
2018Config 3 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824
2018Config 4 of 9Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222724
2018Config 5 of 9Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182420
2018Config 6 of 9Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182420
2018Config 7 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline162218
2018Config 8 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152218
2018Config 9 of 9Auto 9-spd, 8 cyl, 4.0 L8 4.0LPremium Gasoline152218
2017Config 1 of 5Auto (S9), 4 cyl, 2.0 L4 2.0LPremium Gasoline222724
2017Config 2 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824
2017Config 3 of 5Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222824
2017Config 4 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182420
2017Config 5 of 5Auto 9-spd, 6 cyl, 3.0 L6 3.0LPremium Gasoline182420
2016Config 1 of 2Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline222824
2016Config 2 of 2Auto 9-spd, 4 cyl, 2.0 L4 2.0LPremium Gasoline212824

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 GLC-Class data analysis

How Mercedes-Benz GLC-Class combined fuel economy varies

Across 68 configurations recorded for the 2016 through 2027 Mercedes-Benz GLC-Class, combined fuel economy runs from 17 MPG to 29 MPG. The strongest figure belongs to the 2024 Mercedes-Benz GLC-Class (Auto 9-spd, 4 cyl, 2.0 L) at 29 MPG, and the weakest to the 2021 car (Auto 9-spd, 8 cyl, 4.0 L) at 17 MPG — a spread of 71%. 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 GLC-Class would be misleading.

What changed for 2027

Average combined fuel economy for the 2027 Mercedes-Benz GLC-Class is 26.5 MPG, against 24.6 MPG for the 2026 car — it rose by 1.9 MPG. That is a real improvement, and it is the kind of change worth paying the newer-year premium for if this figure drives your decision.

How to read this Mercedes-Benz GLC-Class data

This page lists every 2016 through 2027 Mercedes-Benz GLC-Class record we hold for this measurement — 68 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 GLC-Class numbers

The 2016 through 2027 Mercedes-Benz GLC-Class entries here cover the variants Auto 9-spd, 4 cyl, 2.0 L, Auto 9-spd, 6 cyl, 3.0 L, Auto 9-spd, 8 cyl, 4.0 L, Auto 7-spd, 4 cyl, 2.0 L and Auto (S9), 4 cyl, 2.0 L. 2019 is the busiest model year in the record with 9 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 GLC-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 GLC-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 mph33 MPG33 MPG0%
65 mph33 MPG30.1 MPG9%
70 mph33 MPG27.5 MPG17%
75 mph33 MPG25.2 MPG24%
80 mph33 MPG23.1 MPG30%

Our Real-World Speed MPG Adjuster re-scales the Mercedes-Benz GLC-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 GLC-Class MPG

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

The Mercedes-Benz GLC-Class gets up to 29 MPG combined (26 city / 33 highway) in the 2027 model year. Fuel economy varies by engine and trim — see the full table above for details.

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

The Auto 9-spd, 4 cyl, 2.0 L trim offers the best combined fuel economy at 29 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

View full Mercedes-Benz GLC-Class specs

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