Mercedes-Benz 180 / 190, W120/121 (Ponton) (EU)
Power steering fluid capacity & service interval
Mercedes-Benz 180 / 190, W120/121 (Ponton) (EU) uses power steering fluid with a capacity of 0,3 liter. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 190 b, W121 (1959-1961) |
|
| 180 a/b/c, W120 (1957-1962) |
|
| 190, W121 (1956-1959) |
|
| 180, W120 (1953-1957) |
|
Additional Notes
- Across all four configurations of the Mercedes-Benz 180 / 190, W120/121 (Ponton), the steering box capacity is rated at 0.3 liter, a figure consistent with the compact, recirculating-ball steering box designs common to passenger cars of the 1950s and early 1960s.
- The 0.3 liter capacity applies under normal use conditions for every listed variant, meaning no separate severe-duty or first-change interval is specified for any of the four configurations.
- The W120 series spans two distinct production sub-ranges in the specifications: the base 180 covering 1953-1957 and the revised 180 a/b/c covering 1957-1962, yet both share the identical 0.3 liter steering box fill.
- The W121 series similarly divides into two sub-ranges, the 190 from 1956-1959 and the 190 b from 1959-1961, with the steering box capacity remaining at 0.3 liter across both.
- A 0.3 liter steering box fill is a relatively small volume, which reflects the self-contained nature of a steering box rather than a hydraulic power steering pump-and-reservoir circuit, where capacities are typically measured in full liters.