No problem with what picture you use, but as it's a current S3 I assumed, obviously wrongly, that you were talking about an 8P S3 and not an 8L S3. As you have an 8L S3 you would be better asking your questions in the 8L forum. Perhaps you should add a signature to the bottom of your posts which tells us which model you have - something like mine would be enough!
Anyway the advise I gave applys to both models.
By the way I do own an Audi R10 Le Man racing car - the only trouble is it's a 1:43 scall diecast model !