Bonnier returned to entering his own team in 1966, under the name Anglo-Suisse Racing to reflect his residency in Switzerland at the time. His principal mount that year was a Cooper-Maserati T81, painted in Swiss racing red and white. The year started promisingly at the season-opening non-Championship 1966 BRDC International Trophy at the Silverstone Circuit, with Bonnier qualifying the Cooper in sixth place and finishing a strong third, but the rest of the season brought little joy. A crash in the first lap of the Belgian Grand Prix destroyed his Cooper T81. While the car was repaired Bonnier entered an Alf Francis built Cooper-ATS at the French Grand Prix. After the Cooper-ATS did not prove to be competitive in practice Bonnier made a deal with the Brabham team and drove their spare car for the rest of the weekend. Bonnier's Cooper T81 was repaired in time for the Dutch Grand Prix after having driven a Brabham BT7 at the British Grand Prix. Anglo-Suisse Racing's first Championship points would come at the season-closing 1966 Mexican Grand Prix, from sixth place.