What Car? Mercedes-benz C-class Cabriolet 2020-05-01 - WHAT CAR? SAYSTarget Price £38,127 Our pick C220d AMG Line List price £45,109 MPG 51.4 CO2 145g/km For Reasonably brisk and sure-footed, with occupants well protected from the wind. Against Space is tight in the rear seats and the diesel engine is quite noisy.