2001 BMW 3 Series 330xi AWD 4dr Sedan (3.0L 6cyl 5M)
I bought my 330xi over 11 years ago and now have 110,000+ miles with it (still without having to replace brake pads!).
Most recently I put Michelin Pilot Sport A/S Plus tires on it which improves its already impressive handling in bad weather.
It's incredibly fun to drive and has been relatively economical to maintain.
The handling, performance and ride are outstanding as is its overall construction.
The visibility out the back is restricted for shorter drivers.
The front window defrost could have more fan speeds -- the "high" level is noisy and a bit much for any lenghth of time.
The manual transmission was overly tight when the car was new but is easier to shift now with some age.