BMW does a great job with their suspension. Road feel is superb. Goes around corners fast and flat. Classic styling still looks great. Has all the nice features you expect in a car of this class. The 4.0 V-8 has a lot of power, but can cruise on city streets at 35 mph or on the freeway at 65 mph (if you can restrain yourself). When I drive my 540i, I feel like I'm treating myself to a nice car. The V-8 does drink premium, so be careful with your right foot. Also, make sure you have plenty of $$ for all the maintenance and repairs these cars need. I feel it's worth the extra money to be able to drive such a fine sport sedan.
Handling, steering and performance are world class. The interior is very nice - you can feel the German influence, but it has a nice luxury feel also. I upgraded the stereo and it's fantastic! Car looks great - looks fast while sitting still.
The transmission has a major issue with the valve body. Also, the nikasil block problem gives BMW a big black eye. I've had to replace quite a few parts and the normal maintenance is very expensive - either pay now or pay more later!
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.