Von Moltke currently competes in the IMSA WeatherTech Championship GTD class with Paul Miller Racing in the #48 Audi R8 LMS with co-driver Christopher Haase.

In 2010, von Moltke participated in the Daytona Prototype class of the Rolex Series with Doran Racing for the full season and earned the Rookie of the Year title.

[9] Von Moltke returned to the GT category in 2011, driving for the German Mühlner Motorsport Porsche team at the Rolex 24 at Daytona, backed by PR Newswire and South African Airways.

[12] For 2012, von Moltke returned to APR Motorsport as the team moved into the Rolex GT category with an Audi R8 LMS, partnered with Jim Norman.

[9] A switch to the Alex Job Racing team in the American Le Mans GTC category earned von Moltke a class victory at the 12 Hours of Sebring with co-drivers Townsend Bell and Bill Sweedler.

In 2014, Dion von Moltke signed [13] with the Flying Lizard Motorsports team for the full 2014 TUDOR United SportsCar Championship season behind the wheel of the No.

[2] Von Moltke earned his first career TUDOR United SportsCar Championship pole position at the Detroit Belle Isle Grand Prix, where he and co-driver Christopher Haase finished 3rd in the GTD class.