Just spent a bundle fixing an oil leak caused by a PLASTIC valve cover that cracked. This is apparently common for these models after 60K. Mine had 76K and was regularly serviced at the dealer. In my case, oil leaked onto the ignition coils, causing the engine to misfire. Unbelievable that the 'ultimate driving machine' uses plastic on a part that is subject to such heat.
Since I purchased this car as certified pre-owned it has been back to the dealer for repairs 1/3 of the time. After multiple complaints to BMW-USA the dealer finally contacted me. Before that the dealer ignored me. I am still using a loaner car and the computer module must be replaced.
I have rationalized not getting a 3 series since test driving one before purchasing a TL a number of years ago.
Instantly after driving the TL and 3 back to back I knew the 3 was a better car but I feared long term reliability.
The TL didn't last long and was traded off and years went by before finding a clean 328xi auto with 88k on the odometer.
I recognize that it will be far more expensive to repair than used accords that I was comparing but once you drive one it all seems worth it.
These are solidly built cars not overly contaminated with gadgets or cup holders.
One really starts to enjoy driving, which I haven't done for many years.
The more you DIY the feasible owning seems.
Bought as CPO with 29k miles. Live in Vermont - snow/ice normal here. Now has 97k miles. Haven't fixed anything!! Regular dealer service (oil, inspections). Changed spark plugs at 95k. Best car with AWD I have ever driven - sooo safe! Fast, great breaking, superb handling. I'd recommend buying on of these new, or CPO with 30k or less miles.
BMW performance is great and the car looks good, however, if you want to own a used BMW without warranty you will get very disappointed. I have owned different types of used cars some even older but none compares to a BMW. The maintenance of BMW is a disappointment. There is alway a service engine light on the dashboard that always requires expensive attention.