Stewart is also an avid car enthusiast; he is regularly seen at Silverstone during British Grand Prix weekends. He conducted the podium interview with the top 3 finishers in the 2017 Canadian Grand Prix. On a 2003 appearance on "Top Gear", he set a lap time of 1 minutes and 50 seconds on the "Star in a Reasonably Priced Car" feature. He holds a Motorsport UK competition licence and competed in the 2012 Silverstone Classic Celebrity Challenge race, finishing ninth, 3 m 02.808 s behind winner Kelvin Fletcher. During 2012, Stewart met his racing hero Stirling Moss for the BBC Two documentary "Racing Legends". Stewart is an atheist.