The two Nissan Sentras in this movie, both background vehicles and both distant shots.
http://img260.imageshack.us/g/akeelahandthebeeolderni.jpg/

I'm going to post a couple of shots of the Honda Accord, but I've got to warn you it'll be somewhere behind the newer Nissan Sentra. Either way, whoever posted this list should tell me where they saw the BMW 3.