The first mercedes cars to use the low pivot swing axle were the W180 and W120 sedans around 1955. Most of their models followed suit including the 190SL, the 300SL roadster, the heckflosse/fintail sedans and coupes, the W100 grosser, the W113 roadsters, and the W108/W109 sedans. The W108/W109 models were the last mercdes benz cars to have the low pivot swing axles, with exception of the W100 which was made in small numbers for the rest of the world up until about 1980. Mercedes introduced a trailing arm rear suspension with the introduction of the W114/W115 models in 1968. This system was used with some slight modifications on the W107/W116/W123/W126 models right up through the last W126 in 1991.