For me, a lot of things coming from an old car:
Air con
Sat nav
Proper speakers [logic 7]
Folding mirrors, helps down a lot of roads where i live
Performance!!!!
Tuning capabilitys
Exhaust note
Looks
Comfort, even on 19" and RFT its like a bed compared to my other car
A lot of fine grain settings on iDrive
Sport seats
Handling
Alarm
Remote central locking
Changing the seat setup / steering wheel means my legs wont hit the wheel as much like my current