Just peed off havent even had the vehicle a year and didnt know about the emmissions issue before purchasing it and now the N02 sensor goes. All the research i have done says it shouldn't need to be replaced until 100k, i call the dealer who tells me the part is over $500 plus labor what the hell? If i had know the car had dirty emmissions I would not have purchased it running clean fuel is the main reason i bought a diesel.