I owned a 2006 Malibu 3.5L LT very briefly....like six months. I even bought the car brandnew from the showroom floor.
Anyways, at 12,000 miles....the a/c quit working. The dealer said it was low on freeon and there was an electrical short making the a/c non-operational. Warranty issue
20,000 miles....I brought the car in to have tires rotated. They said the whole front end was wore out and was needing replaced. They even said that a tie-rod end was bad and the car was unsafe to drive. All struts, tie-rod ends, and the steering gear were all replaced. Could have been extremely expensive if not still under warranty.
There was also little rubber pad behind the ignition. This pad keeps the keys from banging against the dash while driving. Well, the pad kept falling off. Just plain crappy! There was also flutter noise in the dash while driving it down any road.
My biggest real complaint though...the doors would not stay open. A small gust of wind would shut the door. If the car was parked on just the slightest incline...the door would shut. I hated reaching into the car and the door slaming shut on my legs.
After that last major repair and when the car was still in the shop....I decided to trade for something better. A front end should have lasted much longer than 20,000 miles...especially since the car was driven easily and only on paved roads as well.
The only good thing about the Malibu....it was good on gas mileage though. I talked to several other owners and others have had the same problems....so it's not just me.