I've owned a 135i for 4 months now. It's fun to drive, but suffers from multiple problems/issues: Throttle response is poor for a car advertised as having no turbo lag. My wife drives a Saab 9.5 which has a better throttle response, especially at low RPM. Dealer tells me performance is 'within spec'. I can't see the radio with polarized glasses on. Radio seems to shut down intermittently, usually right after power-up. Dealer diagnosed a faulty fuel pump, and I'm on a waiting list for a replacement. Apparently they're on backorder??? Run-flat tires are a disappointment. Overall, the car handles and accelerates well, but is a disappointment compared to the E36 M3 I drove before the 135
Compact rear-wheel car with nice balance.
Not seeing radio with glasses, throttle response, fuel pump issues in spirited driving, run-flat tires.