The 2008-2011 Malibu's are also one of the most reliabe vehicles GM has ever made. Are you sure it's a 2012? I find it hard to believe that you already found a 2012 (which has only been out for a month or so) with 20k miles.
Yup, 2012, CA plates, rented in GA. It's a base model, with cheap black plastic trim inside. The seats are vinyl on the outside with alacantra in the center (actually nice and comfy) but cheap looking. The door is one big expanse of black plastic and seams. Looks horrible. The door handles are not firmly screwed to the door, cheap, cheap, cheap.
I just looked at a 2012 Camry at Sun N Fun (the aviation fly-in) and it was worlds better than the Malibu. Different trim levels, for sure. But the plastic did not have that "Cheap" texture to it. So; 3 items that really bug me, a very annoying suspension rattle, cheap plastic and wobbly door handles. Otherwise, quite nice to live with, if a little numb feeling.
To be clear, rentals are often quite low end, and abused, plus minor items go un-repaired.
Question: What's the difference between a rental car and a 4x4? Answer: A rental car can go anywhere!
Did you know that most cars have a "rental car trim" level, which is about 10 steps below the trim level offered to consumers?