M125
Inline-8- 125 F5.7 L · 5,660 cc
600 PS
441 kW · 591 hp at 5,800 rpm
1226 N·m
904 lb·ft at 3,000 rpm
Mercedes-Benz Racing Car · W125 Grand Prix
W125
The 1937 Silver Arrow — still among the most powerful GP cars ever raced.
- Production
- 1937
- Built
- 1
- Body
- Grand Prix / race
- Chassis
- W125
Silver, streamlined, and built for a single Grand Prix season — the W125 was Mercedes-Benz's answer to 1937, and Rudolf Caracciola's weapon in one of the most dominant championship campaigns in pre-war racing.
Designed under the 750 kg formula, the W125 paired a supercharged eight-cylinder engine with a low, light chassis and fully independent suspension — technology that pushed Grand Prix engineering to its pre-war limit. Caracciola, Hermann Lang, and the Mercedes-Benz team swept the 1937 European Championship, establishing the W125 alongside the W25 as the defining Silver Arrow of its era.
Only a handful of W125s were hand-built for the 1937 season — Grand Prix weapons, not a production line. What endures is the result: a Mercedes-Benz that still ranks among the most formidable racing cars of the 1930s.
Every model.
1 distinct series across 1937 — each identified by its chassis and engine numbers from period factory data.
| Model | Model years | Chassis | Engine | Transmission | Total |
|---|---|---|---|---|---|
| W125 | 1937 | 125 | 125 F | 1 |
* The published production figure covers every series of that model; the source does not break it down further.
Engines.
The M125 as fitted to the W125.