1. car stalls/hesitates on right turn. Dealer service could not replicate. Problem started at ownership, and continues at 25K miles. Problem not corrected. 2. check engine light: Car vibrates/shakes standing at idle. 21 days out of service. 3 dealers; four visits. One dealer could not extinguish check engine light. Dealer disassembled engine and made repairs. (exhaust is noticeably louder (not repaired) and the fm radio will not work when the rear defroster is switched on--I suspect a ground wire was broken during the repair (not repaired).

- Bloomfield Hills, MI, USA

Vibration in car above 62 miles per hour. Steering wheel shakes in your hands. Taken to dealer twice they have rotated and balanced tires twice no improvement.

- Crowley, TX, USA

My 2008 Cadillac Cts V6 di AWD has a dangerous acceleration lag when you step on the gas to pass or get out of the way of a hazard in road. There is about a 1-2 sec lag between stepping on pedal and rpms moving, and about another second or so before any pick up happens. Doesn't sound like much, but no other car I have had, did this. At the speed of oncoming vehicles, a 1-2 second lag can mean a 30 - 60 yards of distance being traveled by an oncoming car or truck. That sight fills up rear view mirror fast. In my opinion, this is a serious design flaw and potentially death causing defect. This happens anytime I need quick acceleration, and is also happening in other cars I tried at dealership to see if it was just mine.

- Stoneham, MA, USA