Having the same wheelbase size as the long W143 version, the new 230 model was built on completely new chassis with an oval tube structure that increased the car’s torsion rigidity and supported a heavier pay load.
The car was launched with a choice of 6-cylinder 2.2 L gasoline unit delivering 55 hp and was later upgraded to a larger 2.3 L engine with the same power output. Top speed was capped at 72mph(116 kmh), the same limit as seen on the W143 from which it set apart through the lack of a Pullman body type and the introduction of a large boot on nearly all models.