My 2012 Mercedes-Benz ML-Class is doing 10mpg less than its real mpg states - is there something wrong with the car?

I've been monitoring the mpg of my 2012 Mercedes-Benz ML250 since purchase. I would say 95 per cent of my driving is done around London. According to http://www.honestjohn.co.uk/realmpg/mercedes-benz/ml-class-w166-2012/ml250-bluetec my average should be about 35mpg, however, mine is only 24mpg. Do you think there's something wrong with my vehicle?

Asked on 25 February 2017 by Dilan

Answered by Honest John
No, that is normal for a vehicle of this type being inappropriately used in this way.
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