Mercedes-Benz GLK-Class MPG & Fuel Economy

The 2015 Mercedes-Benz GLK-Class gets up to 27 MPG combined (24 city / 32 highway) in EPA testing.

Latest model year (2015):

The Mercedes-Benz GLK-Class gets up to 27 MPG combined (24 city / 32 highway) in the Auto 7-spd, 4 cyl, 2.1 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Mercedes-Benz GLK-Class MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2015Auto 7-spd, 4 cyl, 2.1 L4 2.1LDiesel243227
2015Auto 7-spd, 6 cyl, 3.5 L6 3.5LPremium Gasoline192622
2015Auto 7-spd, 6 cyl, 3.5 L6 3.5LPremium Gasoline182420
2015Auto 7-spd, 6 cyl, 3.5 L6 3.5LPremium Gasoline192521
2015Auto 7-spd, 6 cyl, 3.5 L6 3.5LPremium Gasoline182521

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 GLK-Class MPG FAQ

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

The Mercedes-Benz GLK-Class gets up to 27 MPG combined (24 city / 32 highway) in the 2015 model year. Fuel economy varies by engine and trim — see the full table above for details.

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

The Auto 7-spd, 4 cyl, 2.1 L trim offers the best combined fuel economy at 27 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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