How can I tell if my Audi 80 needs a new fuel pump?

I've been having trouble starting my Audi 80 and was told it might be the fuel pump. How can I determine if this is the issue before taking it to a mechanic?

One way to check if your fuel pump is failing is to listen for a buzzing or whining noise coming from the fuel tank. This could indicate that the pump is struggling to push fuel to the engine.

You can also use a fuel pressure gauge to test the pressure of the fuel in your system. If it is below the manufacturer's recommended level, it could be a sign of a failing fuel pump.

Another indication of a failing fuel pump is if your engine sputters or stalls while driving, especially at higher speeds. This could mean that the pump is not able to maintain adequate fuel pressure.