This has been one of my best coupes to drive. No other car handles as tight. The interior layout is also excellent. If these cars are taken care of, problems are infrequent. But they are very expensive to repair. My fuel economy is 20 City 27 Highway. I bought it with 92K in 2000 and it has 101K now and going strong. No major mechanical problems. Just the minor annoyances - electric windows got off track from an ice storm, taillight that has a short that I can't find.
Suspension, acceleration, road feel. Body style.
Temperature control needs to be lighted (can't see at night without turning the light on). Battery in the trunk was a huge hassle to change (once I found it). Sunroof is metal only - but I guess that's how BMW makes them.