2006 Mercedes-Benz C-Class C230 Sport 4dr Sedan (2.5L 6cyl 6M)
Overall I love the car. 4500 miles with no repair issues. Car handles and rides great. Low road noise. Very good looking car. I have 3 minor issues; Manual transmission is geared to low, need a different rear end. This leads to poor fuel economy. Driving conservitavily I get 17-20 mpg around town. At 3500 miles the engine developed a low pitched howl. Dealer say it the metal chain on a nylon sprocket that drives the oil pump
Change gear ratio on manual transmission. Get rid of "oil pump howl"