M110
Inline-6- 110.923 2.7 L · 2,746 cc
156 PS
115 kW · 154 KM przy 5,500 obr./min
223 N·m
164 lb·ft przy 4,000 obr./min
- 110.984 2.7 L · 2,746 cc
185 PS
136 kW · 182 KM przy 5,800 obr./min
240 N·m
177 lb·ft przy 4,500 obr./min
Mercedes-Benz Executive Coupé (C123) · Executive Coupé
The elegant two-door on the W123 underpinnings.

Mercedes-Benz added the C123 to the W123 range in 1977, sharing the sedan's overbuilt chassis, recirculating-ball steering, and indestructible inline-four and inline-six engines. The frameless side glass and absence of a B-pillar gave the CE — Coupé/Einspritzung — its distinctive profile; inside, the same vertical-speedometer dashboard and vault-like build quality made it the W123 for buyers who valued style as highly as substance.
Produced from 1977 to 1985, the C123 Coupé outlasted the W123 sedan by a model year and remains among the most sought-after variants of Mercedes-Benz's most beloved generation — a pillarless classic that has aged with exceptional grace.

5 model designations across 1976–1985 — engines, chassis codes and production figures for the C123.
| Model | Lata modelowe | Zbudowano | Podwozie | Silnik | Skrzynia biegów | Razem |
|---|---|---|---|---|---|---|
| 300 CD | 1977–1981 | 1977–1981 | 123.150 | 617.912 | 722.118 | 7,502 |
| 300 CD Turbodiesel | 1981–1985 | 1981–1985 | 123.153 | 617.952 | 8,007 | |
| 230 C | 1976–1980 | 1976–1980 | 123.043 | 115.954 | 722.119 | 18,675 |
| 230 CE | 1980–1985 | 1980–1985 | 123.243 | 102.980 | 722.122 | 29,858 |
| 280 C | 1976–1980 | 1976–1980 | 123.050 | 110.923 | 722.111 | 3,704 |
| 280 CE | 1976–1985 | 1976–1985 | 123.053 | 110.984 | 722.112 | 32,138 |
* Opublikowana liczba produkcji obejmuje każdą serię tego modelu; źródło nie rozbija jej dalej.

The powertrain, safety and facelift changes that date the pillarless 123-series coupé.

The M102, M110, M115 and OM617 as fitted to the C123.
156 PS
115 kW · 154 KM przy 5,500 obr./min
223 N·m
164 lb·ft przy 4,000 obr./min
185 PS
136 kW · 182 KM przy 5,800 obr./min
240 N·m
177 lb·ft przy 4,500 obr./min
78 PS
58 kW · 77 KM przy 4,400 obr./min
156 N·m
115 lb·ft przy 2,400 obr./min
121 PS
89 kW · 119 KM przy 4,350 obr./min
230 N·m
170 lb·ft przy 2,400 obr./min
109 PS
80 kW · 108 KM przy 4,800 obr./min
186 N·m
137 lb·ft przy 3,000 obr./min
136 PS
100 kW · 134 KM przy 5,100 obr./min
205 N·m
151 lb·ft przy 3,500 obr./min