C300 Posted June 15, 2021 Report Share Posted June 15, 2021 We bought a new 2020 ST. Was on show room floor. Had a vibration when I test drove it. 15 miles on it. They said it was flat spots on tires from sitting (right...). Said they would fix any issues if it had any. After putting some mileage on it vibrations getting worse. More pronounced under part throttle going up slight incline 55-65 mph. Transmission is slipping between 2-3 and in/out of 6th. Also wouldn't stop in parking lot sometimes. Like forgeting to push in clutch pedal and trying to stop w/manual trans. Dealership had most in service department quit. After it spent most time in the shop brought to different dealership. They diagnosed and changed the transmission. Quoted $12,000 for new one ! Warranty of course. Still slipping between 2-3. Actually worse! Does anyone else have issues? We bought the ST for the mid size and from the little time we got to drive it we liked it. The vibration from the drivetrain is like putting down one window and having the pressure flutter driving you crazy. Uncomfortable after a half hour. Just want to get out ! That said maybe we did get a lemon?!?! Any info would be appreciated. Anyone else have issues? Quote Link to comment Share on other sites More sharing options...
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