The Mercedes 190E already had a lot going for it in its time and once the Cosworth got its hands on this engine, it turned the power up to 11.

The car, detailed on the RM Sotheby's auction site, is a tuned W124 from famed tuning house Hartge. Based on a 1988 Mercedes W124 300E, it's powered by the same engine that powered the BMW M1 and ...