Forgive me if this is an imbecilic question as I have only had my S3 for a week and a half and the only thing I know about engines is that they can be found under the bonnet. I have noticed what I can only very poorly describe as a faint whooshing noise on acceleration which seems to be more noticeable at lower revs as far as I can tell. Is this normal on an S3? Any answers gratefully received. Cheers, B1.