John 
2001 BMW 3 Series Sedan 330i Rwd 4dr Sedan (3.0L 6cyl 5M)
Performs, but sensors and cold not good
 For the first 3 years I owned the car, I only needed to change the oil and some minor maintenance, but in Feb of 2007, it was a chilly -20 degrees Fahrenheit and the crankcase vent froze up and it hasn't been the same sense.  In fact, it happened again in Jan 2008.  I was able to have it brought to BMW who graciously covered $3800 of the $4000 repair bill.  Since then, I have had an oil sensor replaced, dipstick brake off and now my rear suspension coil needs to be replaced (not sure how that could have broken).  My next car will be a Honda or Nissan..