M143
Inline-6- 143 2.2 L · 2,229 cc
56 PS
41 kW · 55 hp a 3,600 rpm
136 N·m
100 lb·ft a 1,800 rpm
Mercedes-Benz Large Sedan · Typ 230
The volume 230 of the late 1930s.

Mercedes-Benz positioned the W143 as the mainstream six-cylinder offering: 2.3-liter engine, conventional rear-drive layout, and a range of Sindelfingen bodies from practical saloons to touring cabriolets. It was the step up from the four-cylinder 170 V for buyers who wanted refinement and pace without the cost or complexity of the supercharged eight-cylinder range.
Production spanned 1937 to 1941, and the archive tables record 20,290 examples on the W143 chassis. The Typ 230 was among the highest-volume Mercedes-Benz passenger programs of its decade — the defining six-cylinder car of the late pre-war years.

2 distinct series across 1937–1941 — each identified by its chassis and engine numbers from period factory data.
| Modelo | Años-modelo | Chasis | Motor | Transmisión | Total |
|---|---|---|---|---|---|
| Type 230 Sedan | 1937–1941 | 143 | 143 | 19,324 | |
| Type 230 N Coupé | 1937 | 143 | 143 | 966 |
* La cifra de producción publicada cubre todas las series de ese modelo; la fuente no la desglosa más.


The M143 as fitted to the W143.
56 PS
41 kW · 55 hp a 3,600 rpm
136 N·m
100 lb·ft a 1,800 rpm