VW will introduce another fuel-saving technology called cylinder deactivation.
This announcement represents the first time a cylinder shutoff technology has been adapted to a 4-cylinder unit.
On the 1.4 liter TSI unit, 2 of the 4 cylinders are shut down when load is minimal or moderate on the engine. The deactivation can make for up to a 0.6 liter/100 km improvement in fuel-economy when coupled with a stop-start system.
Savings are even greater with certain drive modes. For example, at a constant speed of 50 km/h (28 mph) in 3rd or 4th gear, the deactivation technology can account for up to a 1.0 liter/100 km improvement in fuel-consumption.