danmoch 
2012 BMW 3 Series Sedan 328i 4dr Sedan (2.0L 4cyl Turbo 6M)
Base suspension is awful
 I just returned my 2012 328i with around 30,000 miles at the end of a 3 year lease. Although the 2.0 liter twin scroll turbo engine has plenty of power and the 8 spd automatic transmission was great, the base suspension was so soft and unsettled that just driving the car made me nauseated. This was my 6th BMW and suspension wise, the worst. Early on in the lease period, I changed to sport springs which made a big improvement in handling. Near the end of the lease, I changed back to the OEM springs and couldn't wait to return the car. 