as28 
2006 BMW 3 Series Sedan 330xi 4dr Sedan AWD (3.0L 6cyl 6M)
Read before you purchase
 Pros: Performance, drive experienceCons: Reliability, cost to own. Either lease this car or make sure you can afford to be late to work -to drop it off at the repair shop a few times a year. Read the common issues on the web from most BMW owners.- Water Pump, Shift Display unit (sport mode), engine coils, cylinder head (known issue), bushings, differential, tensioner pulleyand on and on.Issues so common, I sent BMW corp the web links and they paid for the repairs. Car is not worth the trouble. Due diligence and experience has dissolved any brand affinity I have for BMW.Good luck with the techs -if the computer doesnt show them what's wrong they have to rely on trial and error