We have a 2005 S model ZX4 (wife's car), and the only problem we had with it we caused by not performing the maintenance on the automatic transmission. We also have a 2007 SES ZZ3 with a stick (my car) which has been totally reliable. Both cars have about 82000 miles, and have had the brakes done. They are fun to drive, the trunk in the S is really nice since it's so big. Both are really good in the snow. My wife and I would definitely buy them again.