vengefultick 
2006 BMW 5 Series Sedan 525i 4dr Sedan (3.0L 6cyl 6M)
First...maybe last.  Great to drive.  Post-warranty fears...
 I bought my 525i as a CPO with ~32,000 miles on it.By the second day I had an appointment to get the rotors replaced as they were warped.November '10 I had to have the radiator replaced as it developed a sizable whole.The transmission engages rather hard from near-stop or even a full stop at times.It occasionally shifts hard at speed.The dealership swears this is my driving style.I find it commical that I did not have this problem with a '99 Ford Escort, '98 Suzuki Sidekick, '98 Toyota Tacoma, '04 Mazda Protege5, or an '05 Chevy Silverado....but I do with the expensive BMW.The car is fun to drive, the stearing and handling are great.