A typical internal combustion engine needs a continuous supply of fuel to stay operational. Fuel pump is responsible for pumping highly pressurized fuel to the fuel injection system. If it fails to do its job, the engine might not be able to stay functional. So, symptoms of a failing fuel pump in your Audi should not be neglected. Timely action should be taken to detect and repair the faults in the system. To get more information in this regard, have a look at this graphical presentation.