Audi Type M

The Audi Type M was a large car first presented at the Berlin Motor Show in 1923, developed by Erich Horn and produced by Audi between 1924 and 1928. It had a six-cylinder in-line engine of 4,655 cc with overhead valves, an eight-bearing crankshaft and an elaborate air cleaning system, and it developed a maximum of 70 PS at 3,000 rpm to the rear wheels through a four-speed transmission. It was one of the first German-made automobiles with hydraulic brakes and the first Audi with four-wheel brakes. The large six-light Pullman-Limousine cost 22,300 RM, and the car was so expensive that it reportedly brought Audi very close to bankruptcy. 228 were produced, plus two prototypes.