Yep, that was me looking before. auriga, you don't say where you're from (please update your profile with your location when you get a chance), but the US Audi website has 1:43 and 1:87 scale models of the A5 readily available. Here's the 1:43 A5, available in Gray, Blue, and Silver. There are no S5 scale models, but they're not all that different anyway, especially at such a small scale.
I'm surprised your dealer or Audi themselves had no clue about these die-cast models. Audi and VW has been selling these Schuco models of all their cars for ages...I've got a dozen of them dating back to the 1980s.
I'd love to get a 1:18, high-quality model. But they just don't exist yet. Once the car has become more legendary, the toys will come.
I'm surprised your dealer or Audi themselves had no clue about these die-cast models. Audi and VW has been selling these Schuco models of all their cars for ages...I've got a dozen of them dating back to the 1980s.
I'd love to get a 1:18, high-quality model. But they just don't exist yet. Once the car has become more legendary, the toys will come.