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Mercedes-Benz GLC-Class: MPG and annual fuel cost, 2023

The Mercedes-Benz GLC-Class was last rated in the data for model year 2023, at 22 MPG combined, tied for 9th of 11 small SUVs, in the bottom quarter.

Where it stands

Compared only with the gasoline models of its class it is tied for 6th of 7 gasoline small SUVs, in the bottom quarter. The median of that narrower group is 24 MPG, against 25 MPG for all small SUVs together.

Across every class it is tied for 18th of 35 gasoline models, in the lower half.

In its class, just ahead of it is the Mazda CX-9 at 23 MPG and just behind it is the Jeep Wrangler Hybrid at 21 MPG.

2135Median 25This model 22
One dot per model of the class.

Fuel cost and CO2

At 15,000 miles a year with 55% of them in the city, with premium gasoline at $5.48 per gallon, the annual fuel bill of the most efficient version is about $3,750. That is $850 more than the small SUVs median of $2,900.

It emits 397 g of CO2 per mile from the tailpipe; the small SUVs median is 370, a difference of 27 g/mile.

Rated versions

In the city the most efficient version is rated 20 and on the highway 26, 6 better on the open road. 2 versions are rated for 2023. The most efficient, GLC300 4matic Coupe: 2.0 L, 4 cyl, Automatic 9-spd, AWD, gets 22 MPG; the least efficient listed, AMG GLC43 4matic Coupe: 3.0 L, 6 cyl, Automatic 9-spd, AWD, gets 20 MPG, a gap of 2 MPG. With the file's assumptions that gap is worth about $350 a year in fuel.

Rated versions of the Mercedes-Benz GLC-Class for model year 2023
VersionCombined MPGCity MPGHighway MPGAnnual fuel costCO2 g/mile
GLC300 4matic Coupe: 2.0 L, 4 cyl, Automatic 9-spd, AWD222026$3,750397
AMG GLC43 4matic Coupe: 3.0 L, 6 cyl, Automatic 9-spd, AWD201724$4,100444

Year by year

The Mercedes-Benz GLC-Class is in the data for 5 of the 8 model years from 2019 to 2026. Its best combined rating went from 24 in 2019 to 22 MPG in 2023, down 2 MPG. The highest figure came in 2021, at 25. The number of rated versions shrank from 8 to 2. Fuel cost for the best version is $3,750 in the latest data against $3,400 in 2019, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.

242019242020252021242022222023Dashed tick: Class median
Best rating by model year.
Ratings of the Mercedes-Benz GLC-Class by model year
Model yearVersionsBest MPGLowest MPGFuel costCO2 g/miClass median
202322220$3,75039727
202252419$3,40037426
202182517$3,30036026
202082418$3,40037426
201982418$3,40037626

Similar models

Models closest to the Mercedes-Benz GLC-Class in combined rating within its class
ModelPowertrainCombined MPGAnnual fuel costModel year
Mazda CX-9Gasoline23$2,9002023
Jeep Wrangler HybridHybrid21$3,2002023
Jeep CherokeeGasoline24$2,8002023
Jeep Wrangler DieselDiesel25$3,8502023
Mercedes-Benz GLB-ClassGasoline27$3,0502023

Rated almost identically and covered by this page:

Compare and rank

Rankings: Small SUVs.

Data: US EPA and DOE, as prepared in methods and data.