Olofsson started his career in Formula 3 and was twice the Swedish championship. 1977 and 1978 he was in the F3 FIA European Championship success. Initially he was works driver for Nissan, later driver in the Japanese Touring Car Championship; together with Masahiro Hasemi he is in Japan master of sports prototypes. In 1991 he won with Naoki Hattori and David Brabham in a Nissan Skyline in the 24- hour race at Spa-Francorchamps. 1995 and 1996, Olofsson was the leader in the " BPR Global GT Series" with a Ferrari F40 and a McLaren F1 GTR, including winner in the Swedish Anderstorp.
After he / GTC McLaren team launched and second in the overall standings and first in its class for the Gulf Racing at the 24 Hours of Le Mans - in which he had participated nine times - with Jean -Marc Gounon and Pierre -Henri Raphanel was, he joined in 1997 as active drivers from racing back.
Olofsson was later. Together with Carl Rosenblad team manager of Elgh Motorsport team, with whom he Europe, launched at the Swedish World and in the World Touring Car Championship at the