One problem related to engine failure has been reported for the 2004 BMW 530. The most recently reported issues are listed below.
2004 BMW 530i with only 54,000 miles (6 yrs of ownership) - on Sunday morning, my engine won't start on 1/31/2010 all of sudden. - called aaa for battery check and jump start but it was not a battery issue per aaa. - towed my car to my BMW dealer for check up - BMW dealer checked and told me my engine is dead and need to replace it with a new engine. It would cost $13,000 (this is ridiculous. ) - I told them it must be engine defect and check this for me and tell BMW hq - my dealer checked my maintenance record with them and they are trying help and find out what was the issue with the engine. They don't understand either. - dealer is still trying to find out why my engine died with a good maintenance record and only 54,000 miles (no flood involved) - dealer is trying to report to BMW hq with their finding if BMW hq is willing to help. No update from BMW dealer yet. Not sure if BMW hq is willing to help. - please kindly investigate this BMW engine failure defect issue because you don't expect to buy a car that can last only 54,000 miles (6 yrs). This is crazy! - my friend has 3 series BMW and he told me his engine stops multiple times almost everyday. BMW engine has a major issue.