Got this 2007 6-speed with 113K miles at auction today. Trade-in from one of of the big local dealers. Very clean inside and out and seems to run and drive good as I took it around the parking lot. The rear muffler was removed and put in the trunk. My only concern was it took a half gallon of water in the reservoir to turn off the coolant light. Hope it's not a head gasket but it wasn't smoking or over heating. There is a timing belt change sticker from a few thousand miles and months ago. What's it worth once all gone through and serviced up?