High Quality Content by WIKIPEDIA articles! The Mercedes 500K (type W29) is a sports car built by Mercedes-Benz between 1934 and 1936, and first exhibited at the 1934 Berlin Motor Show. It carried the factory designation W29. Distinguished from the 500 sedan by the "K" in its name which denoted the kompressor (supercharger) only fitted to the sports cars, it succeeded the Mercedes-Benz 380 which had been introduced only the previous year, using a larger, more powerful engine and more opulent coachwork to meet customers` demands for greater luxury and performance.