That's still economical by full-size 4x4 standards, and beats the figures achieved by Which? Car for six-cylinder rivals like the BMW X5 30d and Volkswagen Touareg 3.0 TDI.
It also means CO2 emissions are kept relatively low for a large 4x4. At 165g/km, you'll be paying £165 a year in VED tax.
Our testers also asked the question, are four cylinders enough for a luxury 4x4? With a mere 2.1 litres, the ML250 CDI cedes a fair amount of engine capacity to its six-cylinder rivals. The engine's peak power of 204bhp does, however, match the output of rivals like the Audi Q7 and Volkswagen Touareg in entry-level guise.
Mercedes-Benz also offers an ML350 CDI model with a 3.0-litre, 258bhp V6 diesel. Mercedes M class 33 Series Air Filter
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