He made his debut in the FIA World Touring Car Championship in 2008 with a part season.

For 2009 he will compete a full season in the WTCC with Liqui Moly Team Engstler in a BMW 320si alongside team owner, Franz Engstler.

He switched to touring cars in 2007, when he competed in his native Danish Touringcar Championship.

He won the LMP2 class at the 2009 24 Hours of Le Mans in the Team Essex Porsche RS Spyder alongside Emmanuel Collard and Casper Elgaard.

Kristian currently drives the BMW 320si for Liqui Moly Team Engstler alongside Franz Engstler in the World Touring Car Championship.