2001 BMW 3 Series 330i Rwd 4dr Sedan (3.0L 6cyl 5M)
Purchased CPO with 31,000 miles in 2003. Dealer maintained with 112K on the clock. Runs and drives as new. Still returns 24.7 avg city/hwy mileage. Recent tires and shocks have restored the ride quality. Engine is simply superb. Still gets compliments and turns heads. I think the secret is to keep up with the BMW recommended maintenance, don't beat the car, and to use a cover if parked outside during the work day. We liked the car so much that we went out and bought an X3 so we no longer argue about who gets the Bimmer today...
The 3.0 liter inline six cylinder engine is absolutely stunning.
I'd love to see the use of aluminum instead of plastic in the sunroof shade mechanism and window regulators. These fail in the heat of the southwest (Phoenix, AZ) and require replacement.