M03
Inline-6- 03 3.1 L · 3,131 cc
56 PS
41 kW · 55 hp à 3,200 tr/min
140 N·m
103 lb·ft à 1,280 tr/min
Mercedes-Benz Executive Sedan · Typ 300
A short-lived six-cylinder executive from the merger years.

The Typ 300 occupied a narrow niche in the late-1920s catalogue, offering a refined six-cylinder package for formal closed bodies and distinguished touring coachwork. Its brief run reflected the rapid model churn of the period, as Mercedes-Benz refined its lineup around clearer size and price bands.
Only 3,319 were built in a single model year, and the line was quickly superseded — but the Typ 300 established the template for a dedicated executive tier that the enlarged Typ 300/320 would briefly continue.

1 distinct series across 1927 — each identified by its chassis and engine numbers from period factory data.
| Modèle | Millésimes | Châssis | Moteur | Boîte | Total |
|---|---|---|---|---|---|
| 12/55 hp Type 300 | 1927 | 03 | 03 | 3,319 |
* Le chiffre de production publié couvre toutes les séries de ce modèle ; la source ne le détaille pas davantage.


The M03 as fitted to the W03.
56 PS
41 kW · 55 hp à 3,200 tr/min
140 N·m
103 lb·ft à 1,280 tr/min