Just spent 10 days driving one as a rental in AZ. An old man's car. Whiny in acceleration and not that quick, wallows in corners and just plain boring inside. Smooth and quiet at speed, 80 mph on the freeway, but more reminiscent of a Caddy than anything else. Had a sticker on the rear quarter light, 4DSC (four door sports car)! They must think they have to tell us or we won't know.
The HP is close to my 335i but there is no comparison in handling, performance or quality. There is a price difference sure but worth every penny of that difference IMHO.