GM will be introducing 19 new engines and transmissions in their 2007 models. The models will include a new hybrid system and a fuel-saving V-6. GM also said that it will offer 400,000 vehicles that can run on E85 ethanol in 2007. GM’s 2007 Chevrolet Impala is the first V-6 engine that saves fuel by automatically operating on fewer cylinders when there is no heavy load on the car. GM also said it will be expanding the number of vehicles with six speed automatic transmission because they offer better fuel economy.

Source: cars.com