On EU Avants it's in the shark fin antenna at the rear.
On my '04 S4 Avant (without OE shark fin) I've been experimenting over the past week and found that taking the glove box out and fitting the antenna above the area where the CD changer would be gives me 4 satellites at start-up and typically 7 or 8 within a minute or so.
And it's a real easy place to get to - with the glove box off you can even reach the GPS antenna connector on the rear of the RNS-E.
On my '04 S4 Avant (without OE shark fin) I've been experimenting over the past week and found that taking the glove box out and fitting the antenna above the area where the CD changer would be gives me 4 satellites at start-up and typically 7 or 8 within a minute or so.
And it's a real easy place to get to - with the glove box off you can even reach the GPS antenna connector on the rear of the RNS-E.