 This is best car I have had after owning several BMW models. 2005 models came with bluetooth in later production model which apparently are way more reliable than the one's with OnStar*. The only maintenance I have done over the last year is brakes and oil changes. It's hard to drive anything else once you get used to fine interior and futuristic interior. Seats are best in this class of cars. Check details online the way this car is being produced, all aluminum chassis and adjustable suspension modes provide superb ride quality. I prefer SWB over L because of aesthetics. Rear seats still provide a lot of room. MMI is easy to use and Bose stereo is the best I have come across. PPI is a must.