Thank goodness that no class B's (to my knowledge) use the VW diesel platform! Hopefully, as well, that Mercedes hasn't been playing any dirty tricks with the Sprinter's emissions.:S
The Telegraph suggests the fix for UK models is the addition of a urea injection system to the exhaust. estimated to cost owners £50 a year for urea fluid and higher servicing cost for the car. and down the road more expensive replacement exhaust system parts as the wear out.