I had the steering rack replaced on my LTZ due to grinding issues and unusual steering response - everything seems fine now. It does seem to catch grooves in the road pretty easily but I've had a few cars like that. As for quality concerns; EVERY car I've owned has had issues. My new Acura CL had a few unsolvable squeaks and rattles, my GTI had a couple rattles and a quirky transmission, (I have also owned Mazdas, BMWs, Fords...). I would say the Malibu has the fewest annoyances of the many cars I have owned. I really think getting ANY new car is a bit of a gamble especially as the miles add up.