Edmunds is reporting the 9G-TRONIC gearbox will make its debut in a U.S.-spec model on the 2015 CLS.

Edmunds is reporting the 9G-TRONIC gearbox will make its debut in a U.S.-spec model on the 2015 CLS.

Mercedes-Benz introduced its nine-speed automatic transmission last week exclusively on the 2014 Euro-spec E350 BlueTec model. They said in the future the 9G-TRONIC will find its way on most of the company's models as it is compatible with both rear- and all-wheel drives. In addition, the transmission can also work with plug-in hybrid and hybrid systems.

U.S. buyers will have to wait until fall 2014 to get this gearbox when Mercedes-Benz will probably offer it for the CLS. This piece of news comes from a company insider who said the updated CLS will be available with this transmission "in at least one engine combination". The current CLS has a 7G-TRONIC transmission so the two additional gears will help reduce fuel consumption and cut CO2 emissions.

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2015 Mercedes-Benz CLS will be first US model with nine-speed gearbox - report