AlumofCU 
2007 BMW 3 Series Wagon 328i 4dr Wagon (3.0L 6cyl 6M)
My wagon wheel of dreams
 Make sure you have the car completely checked out if you are buying used like I did.  Make sure there are new spark plugs, and the ignition coils have been replaced.  The car leaks oil a bit and I had a window regulator fail, but all are fairly inexpensive and easy to do.  Do not go to the dealer for these things.  You can do them yourself with little knowledge and you tube videos.  Also, my windshield fluid pump failed and I have yet to replace that but here in SoCal, not much of an issue milking that repair.  Regardless, check you tube first.  Almost all of the repairs can be done by you.