He played his first test match for the Springboks on [1992 South Africa vs New Zealand national rugby union team|New Zealand rugby union match|15 Augustus 1992] against New Zealand at Ellis Park in Johannesburg. At the end of 1992 Van Rensburg toured with the Springboks to France and England, but played in only one test on tour, that against England. Van Rensburg also toured with the Springboks to Australia in 1993 and as a replacement, to New Zealand in 1994. His last test was on 23 July 1994 against New Zealand at Athletic Park in Wellington. He scored 40 points in test matches for the Springboks and also played in 15 tour matches scoring 142 points.