It is commonly believed that Automatic transmission cars do not have a clutch, in actuality what they miss is the clutch pedal and rest of the clutch mechanism is very much present. Audi whether with automatic, semi automatic or manual transmission always have the clutch performing the same functions however what differentiates is presence or absence of clutch pedal.
Audi's legacy of supremacy in design and technology continues with development and use of the Haldex clutch in Audi A3 and Audi TT Quattro, the Haldex clutch optimally to the front and rear wheels and provide best possible traction for your Audi. In case there is a speed variation in-between the front and rear axles, the two pumps integrated with the clutch come into action and create pressure to pressurize the control piston. Eventually, regulating the torque to the rear axle by pressurizing the plate sets together. The torque directed to the front wheels by the clutch is around 85 percent in day today driving conditions, however, in extreme cases like when you're stuck into a damp or face an obstacle 100 percent of the torque can be transmitted to either of the two axels. This is controlled by the ECU (car's computer) considering different sensor signals, wheel speed, ABS (anti-lock braking system) and the engine management. This was one example of supreme Audi engineering, Audi clutch are vital to performance of your Audi as they transfer torque and energy to the transmission as and when needed.
A standard Audi clutch is expected to do 80,000 miles under normal driving conditions, the wear and tear of the Audi clutch to a great extent depends on the driving style and circumstances, if you driving style or terrain is such that you slip the clutch a lot, they might demand a replacement at as low as 35,000 miles. It is never advisable to drive around with faulty clutches; a completely defunct clutch will make your vehicle stranded as there will be zero transmission of the torque and energy from the engine to the axles. The maintenance of the clutches is important and easy, some cleaning with oiling and ensuring proper clutch fluid levels is all they need. A properly maintained clutch will always have a prolonged life.
If you feel any difference in the car mileage or experience revving engine while accelerating, stopping or starting your car, your Audi clutch will probably be history soon. Do not wait for the unwanted to happen, get your Audi clutch checked by an expert, at times proper adjusting of the clutch might do the trick. If adjusting does not work, replace the car clutch immediately. You can source replacement clutch from any of the several websites on the internet, research well to know the best clutch as per the model and make of your Audi. Always buy only a trusted brand which has proved it's worthiness over a period of time. The best option is to source your replacement Audi clutch only from an original part manufacturer.