Some BMW 645ci 6-Series users reported engine misfiring. In some cases, you may even get false alarms, such as engine overheating.Ĭompare: BMW vs Porsche BMW vs Audi BMW vs Volvo BMW vs Mercedes Engine misfiring Additionally, the sensor alert may go off continuously. According to reports, the idrive system in the car cut on and off, making the car shut off. This problem is more rampant on the 2004 BMW 645ci.

Electrical faultsĪnother problem that is common with BMW 645ci is electrical issues. Depending on the gravity of the issue or worn-out parts, you may have to part with at least $1,200 to fix the issue. If the oil system parts such as gaskets wear out, the oil will start to leak. That’s why it is crucial to have your car inspected as recommended by BMW. Oil leaks on this car because of an oil system component failure and leaking engine gaskets. This issue is also common on the BMW 645ci model. Generally, oil leaks are common among BMW models. What are some of the common problems with the BMW 645CI? Oil leaks Some of the common problems of the BMW 645ci are oil leaks, fuel pump problems, electrical faults, engine misfiring, ignition coils failure, coolant pipe leak, and much more. What are the common problems of the BMW 645ci?Įven though the BMW 645ci experiences several issues over the years, it has some common problems that users experience. However, this excellent coupe that offers the ultimate driving experience has issues of its own. The BMW 645ci 6-Series is a uniquely designed 2dr coupe with lots of luxurious features, advanced technology, a spacious interior, and a powerful engine.

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