What went wrong for Audi at this year's 24 Hours of Spa?
Blancpain Endurance Series: HTP Mercedes out-muscles Manthey Porsche for victory in the 65th Total 24 Hours of Spa
In the fourth round of the Blancpain Endurance Series, Mücke set his best time, 2:20.675, on his second of two Superpole laps, pipping SMP Racing's Alessandro Pier Guidi
The final entry for the 2013 Total 24 Hours of Spa includes GT cars from Aston Martin, Audi, BMW, Ferrari, Lamborghini, McLaren, Mercedes, Nissan, and Porsche
Stephen Errity, GT Correspondent
Circuit de Spa-Francorchamps