This is hands down one of the most bonkers Audi S1 replica builds going! It’s the Audi Sport Quattro S1 Group B replica tuned by Prospeed Motorsport and driven by the Bulgarian driver Nikolay Zlatkov. This hillclimb monster is powered by a 5-cylinder turbo engine which is able to produce a whopping 770 horsepower! Follow me also on: – Facebook: http://www.fb.com/NM2255 – Google+: http://plus.google.com/+NM2255 – Instagram http://www.instagram.com/nicknm2255/ – Twitter: http://Twitter.com/NM2255 – 2nd Car Channel: https://www.youtube.com/user/nickcarvideos