Bought it used for my teenage daughter last year and it's been good basic transportation for her. It has plenty of pep to get out into traffic (but not too much for a teenager!) and gets pretty good mileage if driven conservatively. However, it suffers from typical mediocre GM quality/design problems : sometimes the A/C doesn't work, sometimes the info display (radio, clock, mileage, etc.) goes black, cheap plastic parts are breaking, brake pads needed replacing, one strut is going bad, CDs get stuck in the CD player, etc. Pretty much what I'd expect from a 4- year old GM.
pretty good mileage for a 6-cyl, reasonable interior room, good sized trunk, decent used-car value
better quality, reliabiliy and styling. Sounds like the new Malibu might have these improvements.