The 2012 Race of Champions was the 25th running of the event, and took place over 14–16 December 2012 at the Rajamangala Stadium in Bangkok, Thailand. During the first day, a ROC Thailand contest was held with four local drivers to decide the identity of the Thai representatives. The top two drivers (Nattavude Charoensukawattana and Tin Sritrai) advanced to the ROC Asia contest, where they faced teams from India, China and Japan. The Thai team was guaranteed a place in the main Nations Cup, whilst the second spot was taken by the victorious Indian team formed by F1 driver Narain Karthikeyan and WEC driver Karun Chandhok. During the second day, Germany took their sixth consecutive Nations Cup victory courtesy of Sebastian Vettel and Michael Schumacher, beating France (Sébastien Ogier and Romain Grosjean) in the final 2–0. During the final day, Romain Grosjean won the Race of Champions, beating Tom Kristensen 2–0 in a closely fought final. In the UK, the live broadcasts of the latter two days of the event on Motors TV attracted a peak of 44,000 television viewers, a respectable figure for a satellite-only channel.
2012 marked the inaugural ROC Asia event, with drivers from a variety of championships (including Formula One, WEC and Super GT) taking part. The top two drivers from ROC Thailand would represent Thailand in the event.
The ROC Thailand contest was held to decide who would represent Thailand in ROC Asia, the Nations Cup and the Race of Champions. 2001 Asian Touring Car Series champion Charoensukawattana and 1999 Formula Asia champion Horthongkum battled out with drift driver Nana and touring car driver Sritrai to be among the top 2.
A 697 metres tarmac track was constructed in the Rajamangala Stadium. The track had a bridge to connect the outer lane with the inner lane in a 8 shape track. All the races were ran to 2 laps (1.394 km). In the first day a chichane was placed in the bridge area. The chicane was modified for the second and third day making the lap time longer. 
Tom Kristensen made the fastest time (1:14.0680) on the second configuration in an Audi R8 at speed of 67.75 km/h.