All of the engines employ direct fuel injection and turbocharging. This downsizing concept coupled with technologies from the Audi modular efficiency platform give them tremendous power with minimal fuel consumption.
The recuperation system uses an intelligent voltage controller for the generator to recover energy during the braking and coasting phases and store it temporarily in the battery. The next time the car accelerates, this energy flows back into the on-board electrical system, relieving the load on the generator.
The start-stop system turns the engine off when the car is at rest, if the gear selector lever is in neutral and the driver’s foot has left the clutch pedal. Start-stop then turns the engine back on as soon as the clutch pedal is depressed — all the while functioning quietly, conveniently, and quickly. The start-stop system also harmonizes perfectly with the seven-speed S tronicS tronicFaster gearshifts, sportier driving: the S tronic combines the sporty characteristics of a manual gearbox with the advantages of an automatic.S tronic .
The Audi dual-clutch transmission S tronic combines the convenience of a torque converter transmission with the dynamics and efficiency of a manual transmission. It changes gears within a few hundredths of a second without any perceptible interruption of pulling power, smoothly and very comfortably. Weighing only around 70 kilograms (154.32 lb), the seven-speed S tronic also helps to save weight. Its two clutches run dry – the elimination of the oil supply further increases the already high efficiency of the transmission. Power is supplied to the electrohydraulic actuator as needed.
The on-board computer with efficiency program is linked to the driver information systemDriver information systemThe display of the driver information system (DIS) brings together a wide range of different information items in the centre of the cockpit and permanently indicates the vehicle’s current operating status.Driver information system . It displays data relevant to fuel consumption and gives recommendations for efficient driving. An enlarged view of the gear-change indicator signals to the driver when he or she should change gears. Another function provides information on which on-board consumers, such as the climate control system or the rear window defogger, are active and how much fuel they are consuming.