I am a new audi owner, and i was just wondering what exactly is abnormal behavior in audi's. I want to know what i should look for in finding problems in my car before they get worse.

For example when i first bought my car it sounded normal, very quite. Now when i start it ( from the inside ) i hear a kind of buzzing noise after a few seconds of the engine start up. I asked my friends if they heard it and only 1 of them said he did. The others said there was nothing there. But seeing how i know it is a different sound from when i first got it, i notice it more.

The car is running fine but that noise is still there and it seems like its coming from the back of my car, but i can only hear it when im inside. I have no idea what it is. Should i be worried?

 

If it's coming from under your back rear seats. It's your fuel pump going bad. You can also try and check your fuel filter.

Here is a link to which should help you in changing the fuel pump:

http://www.a4mods.com/index.php?page.../fuelpump.html

Here is a link to change out the fuel filter. It is for an Audi A4 Avant which is the same steps as our Audi A4 B6:

http://forums.bigskyeuro.com/viewtopic.php?f=55&t=2096

 

change out your filter first. if you change out a bad filter in time, you wont do significant damage to the pump. if its still making that noise after a new fuel filter, then the pump is shot.

 

Another "common problem" are the ignition coils. They were recalled, so you may want to check and see if your car was involved in the recall. Audi dealership

 

keep an eye or your vaccume system. The check valves get corrided and then u get studders in your engine.