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Auto Union Type D 12-cylinder Streamliner racing car Type D, 1938

For the 1938 season, in which a new international Grand Prix ruling restricted engine capacity to 3 litres, the Auto Union engineers led by Robert Eberan-Eberhorst developed the 12-cylinder Auto Union Type D racing car. For the French Grand Prix at Reims in July 1938, the racing department in Zwickau built two Streamliner racing cars on the basis of the 12-cylinder Type D, but both of these were withdrawn following accidents in training.

Engine: 12-cylinder in V arrangement, with Roots supercharger
Displacement: 2,985 cc
Power: 420 hp at 7,000 rpm
Maximum speed: 330 km/h
Series: 1938

Auto Union Grand Prix racing car Type D, 1938 Auto Union Type D Grand Prix racing car with dual compressor, 1939