The German manufacturer made its comeback to the blue - riband category in 2014 .
The German manufacturer took only a year to enjoy a perfect season with a win at Le Mans , and the drivers ' and manufacturers ' titles in the WEC .
The German manufacturer made its comeback to the blue - riband category in 2014 , and took only a year to enjoy a perfect season with a win at Le Mans , and the drivers ' and manufacturers ' titles in the WEC .