Mercedes-Benz Executive Sedan · Ponton 190
W121
Four-cylinder Ponton — nimble and refined.
- Production
- 1956–1961
- Built
- 171,746
- Body
- Sedan
- Chassis
- W121

The W121 Ponton 190 was the more powerful four-cylinder step up from the 180 — a compact executive saloon that brought stronger performance and more prestige to the Ponton range without the cost of a W180 luxury car.
Petrol 190 and 190 b saloons used the 1.9-liter M121 four-cylinder in the same Ponton body architecture as the W120, while the 190 D and 190 Db extended the formula to diesel buyers. This Baureihe covers the four-door Ponton 190 program only — the 190 SL roadster belongs to W121 variant chassis W121.040/042, not the saloon line.
Production ran from 1956 to 1961 across the W121 petrol and diesel saloon range, ending when the W110 190 c and 190 Dc arrived.

Every model.
4 model designations across 1956–1961 — engines, chassis codes and production figures for the W121.
| Model | Lata modelowe | Zbudowano | Podwozie | Silnik | Skrzynia biegów | Razem |
|---|---|---|---|---|---|---|
| 190 D Sedan | 1958–1959 | 08.1958–07.1959 | 121.110 | 621.910 | 20,629 | |
| 190 Db Sedan | 1959–1961 | 06.1959–09.1961 | 121.110 | 621.910 | 61,309 | |
| 190 Sedan | 1956–1959 | 03.1956–08.1959 | 121.010 | 121.920 | 61,345 | |
| 190 b Sedan | 1959–1961 | 06.1959–08.1961 | 121.010 | 121.920 | 28,463 |
* Opublikowana liczba produkcji obejmuje każdą serię tego modelu; źródło nie rozbija jej dalej.

Year by year.
The model, engine and trim changes across the four-door Ponton 190 saloon range.
- 1956
- The 190 saloon joined the range with a 75 hp 1.9-liter M121 engine.
- Ribbed brake drums and wider brake shoes distinguished the 190 chassis from the 180.
- Vent windows, full side-window chrome and a wider grille provided exterior dating cues.
- 1957
- The saloon received a revised interior and recessed boot-lid handle.
- Rear number-plate lamps moved into the bumper guards.
- 1958
- The 190 D introduced the 50 hp 1.9-liter OM621 diesel engine.
- 1959
- The revised petrol saloon was renamed 190 b.
- The revised diesel saloon was renamed 190 Db.
- 1961
- Ponton 190 saloon production ended as the W110 190 c and 190 Dc arrived.
