Why is the Audi A5's engine making a strange noise?

I recently bought an Audi A5 and noticed that the engine makes a strange noise when starting the car. It's a low, rumbling sound that goes away after a few seconds. Is this normal or should I be concerned?

It's normal for an Audi A5 to make a low rumbling noise when starting the engine, especially if it's a cold start. This is just the engine warming up and should go away after a few seconds. If the noise continues or gets louder, then you should have it checked by a mechanic.

Make sure you are using the correct type of fuel for your Audi A5. The wrong fuel can cause the engine to make strange noises. Also, it could be a problem with the timing belt, so it's best to have it checked by a mechanic.

I had a similar issue with my Audi A5 and it turned out to be a loose belt causing the noise. Just have a mechanic check all the belts and tighten them if necessary. It's a quick and easy fix.