Porsche did it, what has been rumored. On September 20th new 911 GT2 set a new record for road-approved sports cars on the 20.6km Nordschleife. New record time is now 6min 47.3 sec.
Sport Auto's test driver Christian Gebhardt took Mercedes-AMG GT R to Nordschleife in Adenau, Germany and time was amazing 7.10,92min. Tyres on the hot lap were Michelin Pilot Sport Cup 2.
Watch the hot lap.
That's very impressive time. There are many more powerful cars, which are not even close that time.