2008 Chevrolet HHR SS 4dr Wagon (2.0L 4cyl Turbo 5M)
We bought the SS HHR a few weeks ago and I have few complaints. The car looks and drives great - I especially like the turbo power for passing and climbing hills. The front bucket seats are made for small, slim people. I'm 5' 7" and if I was one inch taller, my head would touch the roof. The seat side bolsters bite into the side of my back - not too comfortable on long trips. After a 1,200 mile trip last weekend I got 25.2 mpg but the tailpipe got really carboned up and the oil got pretty dirty. Dealer says "it's normal" - which I doubt. Oil was somewhat overfilled from the factory and I'm hoping it just blew out, causing the tailpipe (somewhat oily) buildup - time will tell.
Make the car a little wider so there is room for a center console. Also make the front seats about 2 inches wider.