Swedish-born Andersson, the founder of the Toyota Team Europe (TTE) rally operation in 1975 and the person who led the team that established Toyota's Formula 1 operation in 2000, will compete for Toyota in the South African Total Economy Run from July 29 to August 1.
He will drive a new Toyota Corolla Verso with five-speed multi-mode transmission system.
Andersson was considered one of the best rally drivers in the world in his day and when he won the European Championship in 1972 this was considered the equal of winning the present day World Rally Championship.
He stopped competing in 1979 and since then has focussed on managing the rally team and overseeing the Formula 1 operation.
He is now advisor to Toyota F1 and this position has given him more free time, hence his availability to join Toyota South Africa's team for the Total Economy Run.
Earlier this year he drove a Celica GT4 in the Targa Tasmania and was leading his class when forced to withdraw with an overheating engine.
He says he is delighted to be coming back to South Africa as he has many fond memories of competing in the Total and BNU rallies in the 1960s and ''70s.
Andersson will have multiple national champion Robin Houghton as his co-driver on the Economy Run. Houghton currently co-drives for Charl Wilken in the national rally championship and for Gavin Cronje in off-road racing and has been a class winner in the Total Economy Run in the past.