セーフティカー
In 2015 the Macau GT Cup was recognised by the FIA as the FIA GT World Cup lifting its status to the world championship for GT3 cars. Engel returned with his Mercedes-AMG Driving Academy team in the successful Mercedes-Benz SLS AMG GT3. Engel won the 12 lap qualification race from third on the grid after Stefan Mücke was penalised for a Safety car procedure infringement. Starting from pole position in the 18 lap race around Macau's famous Guia circuit Engel won the race and was crowned the inaugural FIA GT World Cup Champion. Through Engel's victory combined with the 4th-place finish of his teammate Renger van der Zande Mercedes-Benz won the inaugural FIA GT Manufacturers World Cup.