Sunday 23rd October 1966
The Mexican Grand Prix held at the Autodromo Hermanos Rodriguez was won by British driver John Surtees driving a Cooper T81, his first such victory since leaving Scuderia Ferrari to join Cooper Car Company. Surtees led home the newly crowned world champion Australian owner-driver Jack Brabham, driving a Brabham BT20 by eight seconds. A lap down in third place, also driving a Brabham BT20 was Brabham’s team mate New Zealander Denny Hulme.