Getting firsthand information from an actual car owner is one sure way to get an idea of car performance once it leaves the lot. Autobytel features real consumer reviews that give the unbiased experience of a car.
I have owned (3) BMW 5-series vehicles since 2000; a 2000 535i, bought new, kept for 14 years. Then, a 2014 (36-month) 535i lease, and now, a 2017 540i lease. Each of the vehicles has been superb.. performance, styling, finish, comfort (cabin space, quiet, seating), and effective use of technology. So far, the 2014 was been my favorite. (Obviously, I haven't owned the new car for a year.)