His racing career began as a kart driver of the Eifel- engine sports clubs ( EMSC ) Bitburg, which he is to this day. His first success was in 1993, a third place in the ADAC Pop -kart championships. In 1995, he won the 2nd place in the Formula Renault in 1800. 1996 he was 8th in Formula Renault 2000. The next year he finished the season as runner-up. From 1998 to 2000 he participated in the International German Formula 3 Championship in part.
In 2007 he took part in the FIA GT3 European Championship newly established, a motorsport race series for Gran Turismo vehicles. This year was Thomas Mutschmann both driver and team leader of the team Matech Competition. His teammate was in the 2007 Kenneth Heyer, the son of Hans Heyer. The following year he won the team title along with his driver colleagues of Jürgen Gartzen and Georg Nolte. In 2009 Thomas Mutschmann developed a GT1 sports car prototypes based on the Ford GT and was Managing Director of the tuner and team Matech Competition. With this team in 2010 Mutschmann then took part in the FIA GT1 World Championship. This season, Thomas Mutschmann could win along with ex-Formula 1 driver Romain Grosjean on the Ford GT in the FIA GT1 championship already the first race (championship race) at the Yas Marina Circuit in Abu Dhabi, in the qualification race occupied both space 2. Moreover followed at the third round of the Championship at the Brno Circuit again a victory in the championship race. After Grosjean had left the team Matech Competition by factionalism, was his teammate the Englishman Richard Westbrook. With this he was able to celebrate three second places and one third place.
At the end of the 2010 season, Thomas Mutschmann secured, despite the change of team-mate in the course of the season in the World Championship. For the honor he was pleased to enter into the Golden Book of his home town of Bitburg.
After the end of 2010 the team Matech Competition had retired from racing, was Thomas Mutschmann because without cockpit. As a return to the parental shipping was almost decided, Volkswagen Motorsport Director Kris Nissen reported to him. As part of the anniversary " GTI Edition 35" should attend hour race on the Nordschleife Nürburgring on 24 three VW Golf24. Thomas Mutschmann should be instrumental in the development of the 440 -hp turbo Allrader its experience. The test runs were used in the spring of 2011, three races in the VLN Endurance Championship.
His teammates were in the 24 hour race on the Nordschleife Nürburgring Wiesbaden Patrick Simon, the Swede Frederik Ekblom and the current DTM driver Edoardo Mortara. A total of two qualifying sessions Mutschmann Thomas was able to pull already in the First with 8.38,598 minutes, the fastest time in the AT class. In the overall classification, this meant starting place 27 in front of the sister car of Peter Terting, Nicki Thiim, Franck Mailleux and René Rast.
As Edoardo Mortara initially collided at the race Saturday at 22.15 clock at the entrance to the pit lane with another vehicle and following head-on with the track barrier, the 24 -hour race for Thomas Mutschmann and his racing colleagues was early end. In the meantime, Lambda Performance took over the bankrupt estate of match and launched at the end of the year with a Ford GT in the ADAC GT Masters, Mutschmann shared in the final session the vehicle with Nicki Thiim. With a failure and a 21st place, the success did not come.