the cars

The following are all the Auto Unions that are currently part of the Audi collection.

Two D-type machines, one 1938 spec. car and one 1939 spec. car. Also a third surviving D type was an ex-show car discovered in Czechoslovakia in the '70s.

One '39 spec. V16 mountain climb car; believed to be the only all original V16 car to survive. find out more

V16 Type C grand prix car run at Livorno in '36; was rebuilt as a show car for the Deutshes Museum in 1937.

A reproduction V16 A.V.U.S. streamliner and also a reproduction machine to replace the mountain climb car bought from Riga motor museum.

Click here for details on the engines
Auto Union Specifications

Ignition: twin Bosch magnetos; gear driven from rear end of crankshaft.
Lubrication: dry sump lubrication.
Transmission: was an all-indirect gearbox at rear. 5 speed on A type, 4 speed on B and C types; (as a result of 1st gear being blanked of due to the immense torque of the V16. ZF limited slip differential on C type. Multiplate clutch on all types.
Chassis: Welded tubular frame of chrome-molybdenum steel.
Front suspension: Twin training links with bottom arms linked to transverse torsion bars, top arms linked to friction type shock absorbers.
Rear suspension: 1934 A type: transverse leaf spring with swing axle and longitudinal torque arms. 1935, B and C types: transverse leaf spring replaced by longitudinal torsion bars, friction shock absorbers. D type: Porsche type twin trailing arms with torsion bar springing and double action shock absorbers. Rear, De Dion type with Panhard rod, torsion bar springing and double action shock absorbers.
Fuel: capacity 46 gallon fuel tank mounted on frame between drivers' compartment and engine
Cooling: film radiator mounted on the front cross member of the frame. 100% ethylene glycol coolant running through separate coolant tubes. The normal operating temperature was between 85-90 °C. (in the A type the coolant ran through the chassis tubes but this was abandoned when the fluid leaked as fractures in the welds occurred as the chassis flexed.
Steering: worm and rocker shaft to individual track rods 16 1/2 in. dia. steering wheel. About 2.1 turns lock to lock.
Brakes: were initially Porsche designed expanding band type brakes but performance was erratic so these were replaced by two shoe hydraulically operated brakes with rigid light alloy shoes. Finally, on the type D car, to combat brake fade these were replaced by four shoe brakes with a hydraulically operated cylinder per shoe. The shoes were of fabricated steel, which allowed a degree of flexibility.
Wheelbase: A type 9 ft. 4 in B type 9 ft. 5 1/2 in C type 9 ft. 6 1/2 in D type 8' 8"
Wheels and Tyres: Continental 5.25 x 17 front 6 1/2 or 7 by 19 or 22 (race dependant)
Weight: A type 16.6 cwt; B, C type 16.2 cwt; D type 23.4cwt
Maximum speed: 172-195 mph.