Mercedes-Benz Plans Nine-speed Automatic Transmission

The development of automatic transmissions has reached up to seven-speed and eight-speed gearboxes. Car manufacturers like Porsche, BMW and Mercedes-Benz use these kind of systems for their high profile luxury cars.

According to sources reporting to Autocar, it seems that the engineers at Mercedes-Benz are working on a nine-speed transmission. The new box will be introduced on large-capacity engines and offers huge improvements in fuel economy and CO2 emissions.

Development of gearboxes with more than nine rations is unlikely. Mercedes engineers believe nine ratios is the maximum that is technically possible, as well as being the most that customers will be able to cope with.

It would be quite logical to see this new gearbox in future model series like the S-Class, CLS and Maybach.

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  1. I can´t really get the idea of transmission with so many gear speeds.
    Although the latest automatic gearboxes are abled to change gears very fast and still comfortable, but in times of engines with an overabundance of torque I can´t realize the advantage of a seventh, eighth, or even a ninth gear.
    There could even be a disadvantage regarding the ride comfort because of many gearchanges if you just touch the throttle.
    What´s your opinion?


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