Why does my Audi 80 start, but then immediately shut off?

I recently bought a 1995 Audi 80 and it was running fine for a few days. But now, when I start the car, it runs for a few seconds and then shuts off. Any idea what could be causing this?

It sounds like you may have an issue with your fuel pump. When the fuel pump starts to fail, it can cause the engine to shut off after initially starting. I recommend getting it checked and replaced if needed.

Another possibility could be a faulty ignition switch. When the ignition switch goes bad, it can cause similar symptoms as a failing fuel pump. I suggest having a mechanic take a look at it.