The version of the Mercedes-Benz C-class pictured here may look no different from the popular C 220d, but the C 250d badge on its boot actually says quite a lot about it. And that is that this is the more powerful diesel version of the C-class. Yes, it’s powered by the same 2.1-litre four-cylinder diesel engine as the 220d, but thanks to the use of twin turbos here, the power and torque figures are a strong 204hp and 500Nm, respectively. The 220d, for reference, makes 170hp and 400Nm. The 250d is also the first in the C-class range to use Merc’s latest 9G-Tronic nine-speed gearbox.