One problem related to gas recirculation valve (egr valve) has been reported for the 2010 Volkswagen Passat. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Volkswagen Passat based on all problems reported for the 2010 Passat.
Informed that timing chain broke spreading metal bits throughout turbo engine and engine needs to be replaced. Vw will cover timing chain installation but remainder of repair will be our responsibility. The car had 72,000 miles and under the 10yr/100,000 mile warranty. We believe that dealership should have informed us about the timing chain drive failure and advised us to replace before it disintegrated! the vehicle had been back and forth to the dealership three previous times because of the jerking of the issue so that should have been a clue to the service department. After a 10-day holiday where the car stayed in the driveway, when we started it a terrible noise occurred and we could not start it so it was towed to dealership. Fortunately, when the incident happened, we were not driving on a crowded, busy city street or the freeway. We have been loyal vw owners for 50+ years and used our local dealership for 21+ years. We just purchased a new car and it's not a vw. I will get in touch with our lawyer if the dealership will not cover all repairs and labor.