After taking part in some zonal races, Aventín started racing in Turismo Carretera in 1977, first with his brother Antonio (Tony), who was TC Champion 1980-1981 at the wheel of a Dodge. Oscar was triple vice-champion from 1979 to 1982 and won eight races. As of 1983, he switched for a Ford, although he made brief comebacks to his Dodge until 1988. He clinched the 1991 and 1992 Championships at the wheel of a Ford Falcon.
He announced his retirement in 1993, but returned from 1994 onwards driving for Dodge and then for Chevrolet. He officially retired from car racing in 1997 and became president of ACTC board, which he currently presides over as of 2001.
|Turismo Carretera champion
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