Two problems related to engine oil leaking have been reported for the 2003 Volkswagen Passat. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Volkswagen Passat based on all problems reported for the 2003 Passat.
On November 21, 2002, my 2001 vw jetta GLS 1. 8 turbo lost the oil drain plug on the highway. I stopped the car as soon as possible but the engine and turbo were damged severely and had to be replaced. Total cost $6,500. I was not reimbursed. I replaced the jetta with a 2003 vw Passat w8. On November 23, 2003 the oil was changed by the dealer and the dealer contends that the oil drain plug was tightened to factory specifications (20 nm), however the car had an oil leak coming from the drain plug. The dealer replaced the plug free of charge. Here is what is common to both situations: both drain plugs were tightened to at least the factory specification (I changed the oil and always used a torque wrench on the jetta) and both had drain plugs pull away from the pan. I do not know what the root cause was but I have a hypothesis on two important variables: (1) both pans are made of aluminum, which changes shape easily with temperature change, (2) the drain plug is manufactured in such a way that the washer (seal ring) cannot be removed and replaced. If the seal were warped or damaged in some way (perhaps overtorquing or dropping the plug) it might not seal properly. Would like for someone to contact me as Volkswagen has been less than helpful (especially with the jetta).
2003 Volkswagen Passat with recall for faulty seal and heat shield. Consumer had the problem repaired and then received the recalls. He would like reimbursement for these repairs. The consumer stated there was a burning smell coming from the vehicle. The dealer discovered oil leaking from the valve cover and cleaned it. The sunroof tubes and drain plug were replaced.