The C63 S’s 503bhp V8 likes a drink. Its 6.4mpg track economy figure is a fairly heroic effort, but its 26mpg test average is more representative. At a steady 70mph, it managed 34.2mpg, equating to a range of 497 miles.

At £78,023 before options, the C63 S Coupé costs quite a bit more than both the M4 Competition Pack (£62,580) and Giulia Quadrifoglio (£63,540). With carbon-ceramic brakes (£4285), AMG GT R-style alloys (£2395), AMG Aerodynamics Pack (£1260) and a few more extras, our test car came in at £92,223.

Simon Davis

Simon Davis

Road tester
Mercedes doesn’t retain its overall value as well as the Alfa Romeo Giulia Quadrifoglio, but both of them outperform the BMW M4

Mercs generally resist depreciation, so it was a surprise to find the C63 S isn’t expected to hold its value as well as the Alfa. After 36,000 miles and three years, it’s predicted to retain 46% of its original price to the Alfa’s 50% and the BMW’s 43%.

What Car? New Car buyer marketplace - Mercedes-Benz C-Class

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