Audi A3 1.8 Engine noise when accelerating

Hi, Just purchased an Audi A3 1.8 SE, has anyone else noticed that when driving it and accelerating the engine makes a kind of fizzing noise? I've noticed that this noise doesn't seem to be present when revving the engine at standstill in neutral.

IS the a3 turbo? cuz turbos will make a frizzing like noise while accelerating