Audi will introduce several technologies by mid of 2009. This will include a stop and start feature and energy recovery through the brake system.

The stop start system will just be like what others have developed. The system of the car will be off when the vehicle stops and the clutch is released. The engine will be turned on again once the driver engages the clutch. This technology is not yet available for the automatic transmission coupled engine.

The stop start system aims to reduce the carbon dioxide emission by 5g/km and about 0.2L of fuel for every kilometer. Audi will first use this technology on the A3 TFSI 1.4, 2.0L A4, and the A5.

The brake system with energy recovery will be first seen on the manual transmission Audi A3 1.4 TFSI, A4, and the A5 both on the basic and Cabriolet. It is also used on Q7, Q5, and the Audi A6.

The car manufacturer will also make use of a modular efficiency system which basically will encourage drivers to be more efficient while behind the wheels. This will be done through a series of feedback channels that will give the driver relevant data about fuel consumption.

The new Audi cars will also give the driver a cue when to shift the gears. About 30% of  fuel efficiency can be attributed to the different driving habits of different individuals.