Basseng began his career in karting. In 1997 he began competing in the Porsche Carrera Cup Germany for the UPS Porsche Junior Team, finishing third in the 1998 standings.[1] He raced in the Renault Sport Clio Trophy in 2001 and 2002 and won the German Clio Cup in 2003.

In 2004, Basseng began to compete in the VLN Nürburgring Endurance Championship, where he has claimed 25 overall wins. The driver also competed part-time at the FIA GT3 European Championship, FIA GT Championship, Le Mans Series, American Le Mans Series and ADAC GT Masters. In 2008, the Belgian raced full-time at the American Le Mans Series in a Porsche 911 for Farnbacher Loles and VICI Racing.

He began racing in the new FIA GT1 World Championship in 2010 for the All-Inkl.com Münnich Motorsport team, for which he also serves as team manager. On 26 July 2010, Marc Basseng achieved the lap record in a Pagani Zonda R on the Nürburgring Nordschleife.[2] In 2011 he finished 5th in the standings for Münnich, sharing his ride with Markus Winkelhock. In 2012 he claimed the world championship with Winkelhock, managing to win a race and finishing 10 times in the podium.

Basseng moved with Münnich Motorsport to the World Touring Car Championship for 2013.[3] As he was the reigning FIA GT1 World Champion he was ruled to be ineligible for the Yokohama Independents' Trophy.[4] He qualified eighth for the season opening Race of Italy and was battling for sixth place in race one with Gabriele Tarquini before dropping out of contention when he served a drive–through penalty for not having all his wheels down on the ground at the three-minute warning on the grid.[5] He started second for race two but dropped down to fourth before challenging Tarquini for third on the last lap