Auto Union Type D

Leading up to the end of 1937, Auto Union had won 32 of 54 races and needed a new contender for the upcoming restrictions that allowed a three-liter supercharged car with a minimum weight of 850 kgs. For this new formula they developed the Type D which raced alongside the best from Delahaye and Mercedes-Benz in the later half of 1938. Despite having almost half the displacement of the Typ C it replaced, the Type D’s V12 managed to retain almost all the horsepower. Furthermore, with a smaller engine, the driver was able to be positioned further back in the chassis, and even with a new De-Dion rear suspension, the Type C was a handful for its drivers. Mid season, the Typ D was sorted enough to contest all the major races. Tazio Nuvolari went went on to win the Donnington and Monza GP. In 1939 a twin-stage supercharger was installed and with it two more vicoties were scored. The Championship that year went to Mercedes and Rudolf Caracciola. A special hillclimb version was made with double rear wheels and won at events like La Turbie and the Großglockner. After the war, the cars were rendered obsolete due to regulations, but only very few survived anyhow.

Chassis & Sales

019-Prepared in to the newer specificationm, this 1939 model sports a twin-stage supercharger. After the season was cut short due to the war, the factory in Auto Union Factory in Zwickau became Russian property and all the cars were shipped backed to study. Some of these these were later found by Paul Karassik in Ukraine including 019. Found without it’s body, the car was taken to experts Crosthwaite & Gardiner to reassemble the car. It had been cut into pieces for study in the Ukraine. With the help of Rod Jolley Coachbuilding, Crosthwaite & Gardiner refurbished the engine and chassis and the entire car was tested for the first time by Dick Crosthwaite at the Nürburgring in October 1994. In 2002 Chrisities attempted to sell Chassis 019 at their Retromobile sale. Despite a great campaign the car was withdrawn at the last minute because its chassis number could not be verified. It took several years, but Bonhams will include the car at their upcoming Quail Lodge
1938 Auto Union AG Auto Union D 3.0 V12 FRA GER SUI ITA
Nazi Germany Hermann Paul Müller DNS 4 Ret Ret
Nazi Germany Rudolf Hasse Ret Ret
Switzerland Christian Kautz Ret Ret Ret
Nazi Germany Hans Stuck 3 4 Ret
Kingdom of Italy Tazio Nuvolari Ret 9 1
Nazi Germany Ulrich Bigalke DNS
1939 Auto Union AG Auto Union D 3.0 V12 BEL FRA GER SUI
Nazi Germany Hermann Paul Müller Ret 1 2 4
Kingdom of Italy Tazio Nuvolari Ret Ret Ret 5
Nazi Germany Rudolf Hasse 2 DNS Ret Ret
Nazi Germany Georg Meier Ret 2 Ret
Nazi Germany Hans Stuck 6 Ret 10
submitted byRichard Owen
typeRacing Car
production years1938 – 1939
built atZwickau, Germany
body stylistEberan von Eberhorst
engine60º V12
positionMid, Longitudinal
aspirationTwo-Stage Roots Supercharger
block materialSiluminum Block w/Alloy Head
valvetrainPushrod Intake Valves, OHC Exhaust Valves
fuel feed2 Solex Carburetors
displacement2990 cc / 182.5 in³
bore65 mm / 2.56 in
stroke75 mm / 2.95 in
power361.7 kw / 485.0 bhp @ 7000 rpm
specific output162.21 bhp per litre
bhp/weight570.59 bhp per tonne
body / frameAluminum & Magnesium
front brakesLockhead Hydrualic Drums
rear brakesLockhead Hydralic Drums
steeringWorm and Rocker Shaft
f suspensionTrailing Links w/Transverse Torion Bar, Fichtel & Sachs Hydraulic Shock Absorbers
r suspensionDe-Dion Axle w/Radius arms Friction Dampers
curb weight850 kg / 1874 lbs
wheelbase2743 mm / 108.0 in
front track1143 mm / 45.0 in
rear track1143 mm / 45.0 in
transmission5-Speed Manual
top speed~309.0 kph / 192.0 mph
key driversTazio Nuvolari
race victories1938 Italian Grand Prix, 1938 Donnington Grand Prix

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Car:Auto Union Type D
Maker:Auto Union
Class:Grand Prix
Wheelbase:108 in
Notes:Weight: 850 kg / 1874 lb
Engine:60 deg V12
Bore X Stroke:65 X 75 mm
Capacity:2,990 CC
Power:420 bhp at 7,000 rpm
Track:45 in front and rear

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