As it became apparent that the W 125 was no longer competitive in the 1936 season despite two Grand Prix victories, the racing department appointed Rudolf Uhlenhaut as its own technical director. Together with his team, he immediately began developing a fundamentally new racing car. This was an unusual step, given that the days of the 750-kilogram formula were numbered and a completely new displacement-based regulation was set to come into force as early as 1938.
After thoroughly testing the W 125 under racing conditions, Uhlenhaut chose a revolutionary chassis setup for its successor, the W 125, featuring soft suspension combined with strong damping. The engine was also significantly refined. The supercharged inline eight-cylinder engine, enlarged to a displacement of 5.7 liters, delivered up to 435 kW (592 hp) – around 73 kW (99 hp) more than the previous year’s model. This level of engine performance would not be reached again in Grand Prix racing cars until the late 1980s. The W 125 achieved a top speed of approximately 320 km/h. It was instantly recognizable by the three cooling openings in its front section.
The new Silver Arrow won its very first race, the Grand Prix of Tripoli, Libya, with Hermann Lang at the wheel. With a total of seven victories, nine second-place and six third-place finishes, it dominated the 1937 racing season, and Rudolf Caracciola secured the Grand Prix European Championship title for the second time.
Here, the Mercedes-Benz 750 kg formula racing car W 125 from 1937 is available as a model in a 1:38 scale for your home collection.
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There may be slight differences between the image shown and the actual product.