The Audi Type M started production in 1925. The vehicle had a six-cylinder in-line engine with 4.7 litres of displacement. It developed 70 PS (51 kW; 69 hp) over a four-speed transmission which drove to the rear wheels. The engine had an eight-bearing crankshaft, forced lubrication with oil cooler and a thermostat-controlled water cooling. The car had two leaf-sprung solid axles and four wheel hydraulic brakes. It was the first Audi with four-wheel brakes. The expensive car brought Audi to very close bankruptcy. 228 copies were produced, plus two prototypes.
|Engine||6 Cylinder, 4 Stroke|
|Bore x Stroke||90 mm (3.5 in) x 122 mm (4.8 in)|
|Power||70 PS (51 kW; 69 hp)|
|Top Speed||120 km/h (75 mph)|
|Empty Weight||2,500 kg (5,512 lb) (Chassis)|
|Wheelbase||3,750 mm (147.6 in)|
|Track Front/Rear||1,450 mm (57.1 in) / 1,450 mm (57.1 in)|