2006 Mercedes-Benz C-Class C230 Sport 4dr Sedan (2.5L 6cyl 6M)
I can't say enough good things about the car. It gets very good gas mileage (31 MPG on highway with 6 speed manual trans), its comfortable, looks good and handles well. People come up often and say "what a great looking car you've got." I've added the iPod interface which is VERY nice (MB was the first auto mfg to integrate this feature). Your iPod sits in the glove box and you control it from the steering wheel. I also purchased Winter tires that make winter driving much easier to deal with.
Looks Fuel economy Handling / fun factor Interior materials
A slightly larger rear seat? But hey, if your carrying a car full of people constantly - buy a mid size (or larger) car!