My C230 Compressor coupe (35000kms)is having its second transmission in 3 months installed today along with a torque converter this time (included radiator the first time, whose trans cooler chamber took on coolant from other chamber and killed 1st trans). There was a heavy vibration at 80-120km/h under medium throttle, along with some nasty rough shifts around 60km/h and other little glitches. Has anyone heard of transmission troubles with this model? I drive on the sport side, but not abusively. This car has also been through a number of sensors and wiring harness components. My dealer has been great through all of this, but I wonder if this thing is a lemon. I absolutely love my car but I can't afford to have an unreliable vehicle living in the suburbs of Toronto. Warranty is good for another year, so I'm almost considering selling it.