The 28-year-old Frenchman, who has been driving an S2000-spec VW Motorsport-run Skoda Fabia in the World Rally Championship this year, previously competed in one of the biogas-powered Sciroccos on his way to victory in last year's Race of Champions.
With his race experience limited to a pair of outings in the French F4 single-seater series at Paul Ricard last year, he is looking forward to the challenge.
"To run in the Scirocco Cup one week before Rallye Deutschland is a nice change and I'm tremendously looking forward to it. I drove the car before, at my Race of Champions victory, and it's almost as much fun as my rally car.
"With a front-wheel-drive car you can't drift really well, though, but that's not important here. Competing with legends like Juha Kankkunen, Carlos Sainz or Markku Alen is a great thing - I'm sure they haven't lost any of their former skills."
Kankkunen and Sainz have both competed in the Scirocco series before, although Alen - who competed in the DTM and Porsche one-make racing in the 1990s – will be making his series debut.
Ogier's occasional WRC team-mate Kevin Abbring will also race at the Nurburgring.