well the list can be very long depending on what has already been done. common problems with that year, make and model are a bunch. front end peoblems very common(control arm bushings, various oil leaks almost certain after 50k, window regulators will fail often, blower motor resistor will fail, they have common cooling fan problems, power steering hoses known to leak after 4 or 5 years, the list goes on and on my friend.) I am also a first time bimmer owner and as much as I enjoy the luxery/sport package that they are, This will for sure be my last bmw. Be prepared to spend lots of loot on parts and service, scheduled and unscheduled maint. These cars are way over rated and over priced. I would research the car before buying it.