As part of its powertrain revitalization strategy, GM’s European subsidiary Opel is rolling out a host of new transmissions that will join the all-new 1.6 liter turbocharged gasoline– and diesel-powered four-cylinder engines.
All-New Five- And Six-Speed Transmissions
The next-generation five- and six-speed gearboxes feature numerous revisions to internals and the shifter mechanism. According to Opel, the gearboxes have been benchmarked against competitor offerings and deliver smoother shift quality; they are currently being rolled out in the ADAM, Corsa, Meriva, Mokka, Astra, Antara, Zafira and Insignia models with engines exceeding 130 Nm (95 lb.-ft.) of torque.
For small and sub-compact vehicles powered by engines with up to 235 Nm (173 lb.-ft.) of torque, an all-new six-speed gearbox has been developed that is significantly lighter than similar transmissions while incorporating many of the “modifications from the next-generation units”.
All-New Automated Manual Transmission
For the ADAM and Corsa, GM-Opel is developing a new automated manual transmission. The new unit offers sequential-style gear shifting, supports start/stop functionality, and has five-speed automatic operation.
Currently, these are the only details released about the unit.
All-New Eight-Speed Transmission
In the long term, the new five- and six-speed traditional transmissions, and the new automated manual will be followed by an all-new eight-speed gearbox. The wider gear spread, according to Opel, will result in an average fuel economy improvement of more than three percent.
The GM Authority Take
These are welcome transmission developments to complement the new range of class-leading engines. Outside of the eight-speed gearbox that we’ve known about for a while now, what has us most intrigued is the new automated manual unit. If it is at all like a VW DSG/dual-clutch, then it signifies that GM has elected to follow VW, Ford, Mazda, and others into the dual-clutch automated-manual realm — which would be a first for The General.
We’ve reached out to Opel for more details about the automated manual gearbox, and will update this page as soon as we hear back with more details.