These cars have adaptive steering, just one thing more that can go wrong. My dad has an e60 545i, so does his friend, both have had issues with automatic gearbox leaks, been back to BMW a few times to sort them out. My dad's friend's 545i cracked the gearbox housing just out of motorplan after it had been in and out the dealership a few times for the gearbox leaks. BMW wanted R35 000 for the job, he said stuff that and traded it in on a E90 330d, been happy since.