So far so good. Had a small problem with the sunroof. One of the rubber gaskets fell out and was torn by the sliding roof. Engine is smooth and sufficiently powerful to accelerate as needed. One dislike is the run-flat tires which are make the ride rough although the safety advantages are accepted.
I don't know what year BMW switched, but my 1999 323i radio antenna was embedded in the rear window glass similar to, but not the defrosting elements. Poor reception may due to corroded or dirty contacts caused by humidity and moisture. Search the internet to determine the location of those contacts which may be accessible behind a covering in the trunk.