Yvan Muller has hinted his racing future may continue elsewhere after confirming his retirement from the World Touring Car Championship in China.

The four-time WTCC champion will hang up his racing overalls in the series at the end of the season and explained his choice to retire was based more on his dwindling desire and motivation rather than age or the fact Citroen is pulling out its factory effort from the championship.

Yvan Muller announces retirement from WTCC

However, Muller has denied he will retire from racing fully and has hinted at future opportunities he is looking to grab outside of WTCC, either as a driver or part of his team Yvan Muller Racing.

"Driving has been part of my daily life for so long that I can't see myself stopping racing entirely," Muller said. "But I am going to spend more time with my family and developing my team, Yvan Muller Racing. Before that, though, I am going to put everything I've got into meeting the team's goals."

The 47-year-old has made the official announcement on the eve of the WTCC Race of China marking the end of the 11-year career stint in the series having claimed four titles (2008, 2010, 2011 and 2013), 29 pole positions, 48 race wins, 125 podium finishes and 38 fastest laps - the most successful career in WTCC history.