I've currently got an F30 328i Sport Xdrive loaner while my E92 328i Xdrive is in service. The car is fine, but I do have a few criticisms:
1. The steering feel and weight is nowhere near as good as the E92.
2. The turbo 4 delivers good power in a linear fashion, but still sounds like a 4 cylinder under load. Gas mileage is about 20% better though.
3. The dash design is just awful. It looks like a dozen random pieces joined together by an abnoxious red stripe. I enjoyed the car much more this morning, in the dark, than I did yesterday during the day. Given that the interior is where I spend the most time with a car, this is a major factor.