mercedes/sprinter RV pulling a car? Is this good ?

If I remember correctly, the 2500 engine T1N Sprinter could tow up to 5,000 lbs., according to Mercedes and the van converters, and I've seen some towing small cars or trailers for sports gear like kayaks. So I don't think that's a negative.

To me, towing detracts from the car-like qualities of a Class B, but it does provide the flexibility of the option, should you need to tow sometime. So that's a positive.