The version of 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 why 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 as strong as 204hp and 500Nm. 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.
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