I guess it all depends if the dealership really intended to defraud or not...it depends on how they go about rectifying the problem.
The MB dealerships here won't go near a car with more than 40K...they just wholesale them off. Brokers will offer them for sale, and some are more prone than others to "stretch the truth".
Hope they make good on the deal in some way that you can realize some satisfaction with your purchase.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car