I concur with Noam.

The cars are heavy (by at least 150 lbs), the 2d to 3d gearing is fustrating (especially on the uphill at NH), there is virtually no aftermarket support for the 318i/is, and as many will attest, there is very little power to be made from the M44. Also, like all the BMW's, every part is EXPENSIVE. All that being said, at least it's a Bimmer!!