M04
Inline-6- 043.1 L · 3,131 cc
56 PS
41 kW · 55 hp at 3,200 rpm
162 N·m
119 lb·ft at 1,200 rpm
Mercedes-Benz Executive Sedan · Typ 300 / 320
W04
The 12/55 PS line, briefly continued into 1928.
- Production
- 1927–1928
- Built
- 202
- Body
- Sedan
- Chassis
- W04
The Typ 300/320 was Mercedes-Benz's attempt to stretch the 12/55 PS executive formula — a slightly larger, more imposing six-cylinder chassis for buyers who wanted additional wheelbase and cabin space without crossing into full flagship territory.
Arriving in 1927 as a continuation and enlargement of the Typ 300 line, the 300/320 shared the engineering philosophy of its predecessor while offering coachbuilders a more generous platform for formal saloons and open touring bodies. It sat in a transitional moment, as Mercedes-Benz sorted its model hierarchy for the late 1920s.
Production was brief and modest: just 202 examples between 1927 and 1928. The short run underscores how quickly the company's executive range evolved, as newer chassis absorbed the role the 300/320 had been meant to fill.
Every model.
1 distinct series across 1927–1928 — each identified by its chassis and engine numbers from period factory data.
| Model | Model years | Chassis | Engine | Transmission | Total |
|---|---|---|---|---|---|
| 12/55 hp Type 320 | 1927–1928 | 04 | 04 | 202 |
* The published production figure covers every series of that model; the source does not break it down further.
Engines.
The M04 as fitted to the W04.