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|2018||2018 2dr Convertible 268-hp 3.5L V6 7-sp shiftable automatic RWD||28.3||
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|With the turbocharged 255hp 2.0L I4 engine, 9-speed shiftable automatic transmission, and rear-wheel drive, the 2018 Mercedes-Benz C-Class has been averaging 28.3 MPG (miles per gallon).
The 2018 Mercedes-Benz C-Classes in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 70 percent of the miles driven). The rest of the miles were in the city (5 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).
In addition, the average 2018 Mercedes-Benz C-Class in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.