Kev:
strictly from my own xperience:
a.) u cd bring it into bimmerpro @ batu caves. the owner, Poh, is a very helpful and nice chap.. and most importantly, he charges very reasonably.... surely he would be glad to check out the car for you.. if u r serious, i'll get u his phone number
b.) look for:
- transmission jerk. make sure when u test drive it, the tranny feels smooth. be more sensitive to when u r stopping the car, and see if there's any jerk shifting down just before full stop
- when u test drive, listen if there's any excessive hissing sound (external air), or any other vibrational nuisance...
- browse thru the i-drive and see if there's any recent faults or warning
- check the auto seat.. most i saw were broken..
- if u r going for the m-sport, the soft-touch coating on the steering wheel usually have peel-offs.. choose one with minimal peels la... ( my advice: get the m-sport.. dun waste your money on the "hi-line"..)
well, that's all i could think of rite now...
all the best, and hope u get that ride!