I own a 2000 VW Jetta VR6. for the first year I had no problems I mean none. Last year I was driving and the Check engine light came on and my car starting sputtering and acting all weird. I went to my dealer to have them take a look. Well Come to find out it was my front O2 sensor so they replaced it. My car ran Fine then it happened again. They found that the REAR O2 sensor was Bad so they replaced that but it fouled my front one. Because I had 2 bad O2 sensors it fouled my CAT which was replaced. So now I had 2 new O2 sensors and a new CAT, problem solved. WRONG the EMS or EPC was sending the wrong info to the engine so I had that replaced. This all happened less then 8 months ago but took over 2 months to fix with me going back for each BAD part. Now My car is doing the same thing all over again. What should I do? should I demand a new engine? Should I see if they are willing to Trade my car for another car just like mine. Ill take a yours you keep mine and you deal with it. I only have 55K on the car and it has 100K warr.