2002 Mercedes-Benz C-Class C320 4dr Sport Wagon (3.2L 6cyl 5A)
I bought my C320 wagon on Ebay and it is one of the best cars I've ever owned (and I've had about 30). No problems ever, gas mileage never goes below 20 and even on short trips goes over 25-26mpg. I put Michelin hi end tires on and it corners on rails even on wet pavement. Use premium gas, use Mobil 1, change oil every 5k miles and it will run forever. It was not a cream puff when I got it either.
Multi-driver electric seats are a big plus, more space than you think in the back. I've put a dishwasher in there, hauled a stove.
Not much. Just would like there to be a C300 wagon available in the USA (it is in Germany.)