The 1985 face-lift saw the arrival of a heavily changed car sporting new looks and underpinnings.
Fuel efficiency and engine running smoothness were improved through the introduction of modern fuel injection systems that were fitted on all models except the 200 which was equipped with a Stromberg/Pierburg type carburetor. More and more electronics began to find their way into cars and Mercedes-Benz engineers found a clever way to use them through the introduction of an oxygen sensor in the exhaust, mated to a partially electronic fuel injection system that helped both improve fuel consumption and lower emission levels.