Good Morning, i am new to the forum and was looking for any advice you can offer, I recently purchased a 2013 Q3 Quattro (177) . I have had the car a month now and over the last couple of days it has developed a strange whirring noise after i stop at traffic lights or junctions for more than a minute, the noise will continue for the rest of my journey. However when i fire the car up the next there is no noise until i have been idling in traffic for a short period. Car still performs as it should with regards acceleration , not overheating or running cold. I have stopped and had a cursory look but cant see anything obvious to where noise comes from. As I am new to audi is this just normal or is this a particular fault. I would really appreciate any help or advice.