[5] Dienst also started three races in the 2015 FIA Formula 3 European Championship for Artline Engineering as a guest driver.

In 2017, he drove for the Dempsey-Proton Racing team in the FIA World Endurance Championship, in the LMGTE Am class.

[6] In addition, he made a guest appearance for Craft-Bamboo Racing in the GT World Challenge Asia in Shanghai.

[7] In 2018 he participated in the European Le Mans Series in the GTE class for Proton Competition.

He has since gone on to compete in the ADAC GT4 Germany, Nürburgring Endurance Series, Deutsche Tourenwagen Masters and the Intercontinental GT Challenge.