M189
Inline-6- 189.981 3.0 L · 2,996 cc
162 PS
119 kW · 160 hv / 5,300 r/min
237 N·m
175 lb·ft / 4,200 r/min
- 189.980 3.0 L · 2,996 cc
162 PS
119 kW · 160 hv / 5,300 r/min
237 N·m
175 lb·ft / 4,200 r/min
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.

8 model designations across 1957–1962 — engines, chassis codes and production figures for the W189.
| Malli | Mallivuodet | Valmistettu | Alusta | Moottori | Vaihteisto | Yhteensä |
|---|---|---|---|---|---|---|
| 300 d Sedan | 1958–1962 | 11.1957–03.1962 | 189.010 | 189.981 | 3,073 | |
| 300 d Sedan (sliding roof) | 1958–1962 | 11.1957–03.1962 | 189.011 | 189.981 | sisältyy yllä olevaan | |
| 300 d Sedan automatic | 1958–1962 | 11.1957–03.1962 | 189.010 | 189.980 | sisältyy yllä olevaan | |
| 300 d Sedan automatic (sliding roof) | 1958–1962 | 11.1957–03.1962 | 189.011 | 189.980 | sisältyy yllä olevaan | |
| 300 d Chassis | 1958–1962 | 11.1957–03.1962 | 189.010 | 189.981 · 189.980 | 1 | |
| 300 d Cabriolet | 1959–1962 | 07.1958–02.1962 | 189.033 | 189.981 | 65 | |
| 300 d Cabriolet automatic | 1959–1962 | 07.1958–02.1962 | 189.033 | 189.980 | sisältyy yllä olevaan | |
| 300 d Special LWB | 1961 | 12.1960–02.1961 | 189.010 | 189.980 | 3 |
* Julkaistu tuotantoluku kattaa kyseisen mallin kaikki sarjat; lähde ei erittele sitä tarkemmin.

The equipment and body developments that made the fuel-injected 300 d the final Adenauer Mercedes.

The M189 as fitted to the W189.
162 PS
119 kW · 160 hv / 5,300 r/min
237 N·m
175 lb·ft / 4,200 r/min
162 PS
119 kW · 160 hv / 5,300 r/min
237 N·m
175 lb·ft / 4,200 r/min