AutoSpecData

Mercedes-Benz CLA-Class Fuel Economy (MPG)

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

The 2027 Mercedes-Benz CLA-Class gets up to 126 MPG combined (127 city / 124 highway) in EPA testing.

Latest model year (2027):

The Mercedes-Benz CLA-Class gets up to 126 MPG combined (127 city / 124 highway) in the Auto (A1) trim.

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

Mercedes-Benz CLA-Class MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2027Config 1 of 4Auto (A1)—Electricity112105109
2027Config 2 of 4Auto (A1)—Electricity127124126
2027Config 3 of 4Auto (A2)—Electricity120115118
2027Config 4 of 4Auto (AM8), 4 cyl, 1.5 L4 1.5LPremium Gasoline293933
2026Config 1 of 7Auto (A1)—Electricity127124126
2026Config 2 of 7Auto (A1)—Electricity112105109
2026Config 3 of 7Auto (A2)—Electricity120115118
2026Config 4 of 7Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222925
2026Config 5 of 7Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline263630
2026Config 6 of 7Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline253429
2026Config 7 of 7Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202823
2025Config 1 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202823
2025Config 2 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline263630
2025Config 3 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline253429
2025Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222925
2024Config 1 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline263630
2024Config 2 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline222925
2024Config 3 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202823
2024Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline253528
2023Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline253629
2023Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243327
2023Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline212924
2023Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202823
2022Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline253629
2022Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline212924
2022Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243327
2022Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202823
2021Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline253529
2021Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243327
2021Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline222925
2021Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202923
2020Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline232925
2020Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline253528
2020Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233327
2020Config 4 of 4Auto (AM8), 4 cyl, 2.0 L4 2.0LPremium Gasoline202923
2019Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2019Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243729
2019Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2019Config 4 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233026
2018Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2018Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2018Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243729
2018Config 4 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233026
2017Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233026
2017Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233227
2017Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233227
2017Config 4 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243629
2016Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2016Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233026
2016Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2016Config 4 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline263730
2015Config 1 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2015Config 2 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline233026
2015Config 3 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline243227
2015Config 4 of 4Auto (AM7), 4 cyl, 2.0 L4 2.0LPremium Gasoline263730

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 CLA-Class data analysis

How Mercedes-Benz CLA-Class combined fuel economy varies

Across 55 configurations recorded for the 2015 through 2027 Mercedes-Benz CLA-Class, combined fuel economy runs from 23 MPG to 126 MPG. The strongest figure belongs to the 2026 Mercedes-Benz CLA-Class (Auto (A1)) at 126 MPG, and the weakest to the 2026 car (Auto (AM8), 4 cyl, 2.0 L) at 23 MPG — a spread of 448%. 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 CLA-Class would be misleading.

What changed for 2027

Average combined fuel economy for the 2027 Mercedes-Benz CLA-Class is 96.5 MPG, against 65.7 MPG for the 2026 car — it rose by 30.8 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 CLA-Class data

This page lists every 2015 through 2027 Mercedes-Benz CLA-Class record we hold for this measurement — 55 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 CLA-Class numbers

The 2015 through 2027 Mercedes-Benz CLA-Class entries here cover the variants Auto (A1), Auto (A2), Auto (AM8), 4 cyl, 1.5 L, Auto (AM8), 4 cyl, 2.0 L and Auto (AM7), 4 cyl, 2.0 L. 2026 is the busiest model year in the record with 7 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 CLA-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 CLA-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 mph124 MPG124 MPG0%
65 mph124 MPG115.6 MPG7%
70 mph124 MPG107.7 MPG13%
75 mph124 MPG100.3 MPG19%
80 mph124 MPG93.5 MPG25%

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

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

The Mercedes-Benz CLA-Class gets up to 126 MPG combined (127 city / 124 highway) in the 2027 model year. Fuel economy varies by engine and trim — see the full table above for details.

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

The Auto (A1) trim offers the best combined fuel economy at 126 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

View full Mercedes-Benz CLA-Class specs

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