M189
Inline-6- 189.9813.0 L · 2,996 cc
162 PS
119 kW · 160 hp at 5,300 rpm
237 N·m
175 lb·ft at 4,200 rpm
- 189.9803.0 L · 2,996 cc
162 PS
119 kW · 160 hp at 5,300 rpm
237 N·m
175 lb·ft at 4,200 rpm
Mercedes-Benz Ultra-Luxury Sedan · 300
The Adenauer Mercedes — W189 generation.

The 300 d adopted mechanical fuel injection from the 300 SL program, bringing a meaningful power and refinement gain to the formal saloon, cabriolet, and long-wheelbase bodies that had defined Mercedes-Benz state-car motoring since the W186. It was the last separate-frame Großer Mercedes before unitary construction took over the luxury range.
Built from 1957 to 1962, Mercedes-Benz produced 3,142 W189 cars. It closed the Adenauer chapter with the firm's most advanced six-cylinder technology — a dignified end to an era of formal, hand-finished flagship saloons.

7 model designations across 1957–1962 — engines, chassis codes and production figures for the W189.
| Model | Model years | Chassis | Engine | Transmission | Total |
|---|---|---|---|---|---|
| 300 d Sedan | 1958–1962 | 189.010 | 189.981 | 3,074 | |
| 300 d Sedan | 1958–1962 | 189.011 | 189.980 | included above | |
| 300 d Sedan | 1958–1962 | 189.010 | 189.981 | included above | |
| 300 d Sedan | 1958–1962 | 189.011 | 189.980 | included above | |
| 300 d Cabriolet | 1959–1962 | 189.033 | 189.981 | 65 | |
| 300 d Cabriolet | 1959–1962 | 189.033 | 189.980 | included above | |
| 300 d LWB | 1961 | 189.010 | 189.980 | 3 |
* The published production figure covers every series of that model; the source does not break it down further.


The M189 as fitted to the W189.
162 PS
119 kW · 160 hp at 5,300 rpm
237 N·m
175 lb·ft at 4,200 rpm
162 PS
119 kW · 160 hp at 5,300 rpm
237 N·m
175 lb·ft at 4,200 rpm