Paul, take it from me, the Mercs might be great value, but for a reason!
I have a C250d estate that is 16 months old and has been back to the dealer for 3 unscheduled visits!
An engine oil gasket went after 2 weeks, then the Dpf filter after 12 months, then a turbo pipe 2 months later!
Pretty poor for a 25k mile car that lists at £36k with the extras! Never had anything so poor.
In fact the company are so fed up I am ordering a new car this week and we will hand this back once it is 18 months old. It will be an A4!
My Sup is now tucked up for the winter too.