Seven-speed automatic transmissions are widely used by luxury automakers including Porsche and Infiniti, while Mercedes-Benz and BMW have also adopted the use of eight-speed automatic gearboxes as well. But this wasn't enough, especially for Mercedes-Benz, which is currently working on a nine-speed automatic gearbox and will be introduced on large-capacity engines.
The information comes from a senior source at Mercedes-Benz who revealed that the new gearbox will offer significant improvements to fuel economy and CO2 emissions.
Simply adding an extra gear is no easy task, however, and Mercedes-Benz is unlikely to go further with anymore gears. It appears that a development of a gearbox with more than nine ratios is unlikely, because nine ratios are the maximum that is technically possible and may be the most that buyers will be able to work with.
Rivals like Audi, BMW and Lexus already use eight-speed gearboxes, and some have even faster shifting dual clutch units. Dual clutch transmissions can shift faster than automatics, and are even more fuel efficient. In this case, why Mercedes-Benz bothers to design a new nine-speed automatic? The reason why is that conventional automatics have some clear advantages over dual clutch units as they tend to be lighter, more reliable, less complex and cheaper to manufacture.
|The Mercedes-Benz E-L spotted at the Shanghai Auto Show|
|Mercedes reveals 2010 E-Class Convertible|
|Mercedes-Benz Viano planned for next July|
|Will the next generation Mercedes S-Class be exclusively hybrid ?|
|Mercedes-Benz G-Class EXTREM previewed|
|Rare right-hand drive Mercedes 280SE Cabrio V8 hitting the block at Brooklands|
|Mercedes SLS AMG flies on top of museum|
|Spy photos of 2012 Mercedes M-Class surface|
|Mercedes Benz is thinking of a new power plant for the E-Class|
|Mercedes-Benz C350e ready for order starting January|
|Mercedes-Benz G65 AMG by A.R.T|
|Mercedes-Benz E400 Hybrid|
|Mercedes-Benz ML63 AMG|
|Mercedes-Benz CLA 250 D2Edition|
|Mercedes-Benz S63 AMG Coupe by Wheelsandmore|
|Mercedes-Benz G63 AMG by Vorsteiner|
|Latest||Cars & News|
|2018 Buick Enclave review|
|2017 Ford F-250 XLT Super Duty review|
|2015 Audi A8 L Chauffeur review|
|2015 McLaren P1 by MSO review|
|2015 Mercedes-Benz S63 AMG Coupe review|
|2020 Porsche Macan GTS comes to fill Macan S and Macan Turbo range|
|Suzuki Jimny is set to get competition from Jeep|
|Toyota Highlander will be available in petrol only or hybrid powertrain|
|Skoda Rapid facelift was unveiled in Russia|
|McLaren 620R is the limited edition street version of the 570S GT4|