Bought a Matrix 2010 during the middle of 2009. then the nightmare starts:
During the first month, I had to drive back for noise issues - from door, front, chair..., the service tried at least 3 times changing everything but the noise was still there.
After that, coming fule efficience issue: 10L/100km on the highway. 12+L/100KM local. I drive very conservatively, easy on accel and don't go much over 110-115 on highways.
I had the dealer do some diag. tests. they just did a computer testing and says its good and "within spec". When I asked what wrong with the number for real experience they didn't care. Basically they seem to say everything is great no matter what.
I even don't want to mention the callbacks...