I don't know if you have googled this but there seem to be a few threads (Mercedes based) on this elsewhere. No concensus on reason/solution but some recommend getting realignment. Others say its a charactristic.
Interesting view here that its due to our poor roads being beyond the adjustment parameters of MB -
www.mbclub.co.uk/forums/wheels-tyres-brakes-suspen...l
May be worth getting realignment by MB as part of the deal but reconcile yourself to the possibility of still having some degree of pull. Or buy somethng else of course.
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