Volkswagen says that cylinder shut-off reduces fuel consumption of the 1.4 TSI by 0.4 liter per 100 km in the NEDC (New European Driving Cycle) driving cycle. When the Stop/Start functionality is integrated, which deactivates the engine in neutral gear, the savings effect adds up to about 0.6 liter per 100 km. The greatest benefits of the technology are realized while driving at constant moderate speeds. At 50 km/h, in third or fourth gear, savings amount to nearly one liter per 100 km. Even when running on two cylinders, the 1.4 TSI—with its excellent engine balance—is still very quiet and low in vibration, Volkswagen says. Like the system on the Audi models, the on-board computer would measure various characteristics such as throttle position, the car’s features and accessories being used at the time, and the load on the engine before the deactivation would engage.
Once again, VW is making advanced technology available to the mass. It truly deserve to be called the “People’s car”.