High Quality Content by WIKIPEDIA articles! The 1990 World Rally Championship season was the 18th season of the FIA World Rally Championship. The season consisted of 12 rallies. The drivers` world championship was won by Carlos Sainz in a Toyota Celica GT-Four, ahead of Didier Auriol and Juha Kankkunen. The manufacturers` title was won by Lancia, ahead of Toyota and Mitsubishi.