BMW Owner 
1999 BMW 5 Series Sedan 540i 4dr Sedan
TERRIBLE RELIABILITY
 I bought a "certified" BMW and had NOTHING but problems since I bought it.  I have had three different severe problems with the cooling system alone and this is with a car with only 50,000 miles on it.  All three cooling system problems happened three weeks after my "certified" maintenance expired and each cost approx $1000 to fix and left me stranded.  This car drives nice and is fast and all but mechanically it is a nightmare and it totally unreliable.  And again, it was a "certified" car when I bought it.  BEWARE:  BMW service like brakes and regular service is EXPENSIVE!  $1000 just for front brakes which you need every 25,000 miles or so.  I am not happy and getting rid of the car.