Kammala jumla mai zuwa: Bonnier ya koma shiga tawagarsa a 1966, a karkashin sunan Anglo-Suisse Racing don nuna mazauninsa a Switzerland a lokacin. Babban hawansa a wannan shekarar ya kasance Cooper-Maserati T81, wanda aka zana a cikin tseren tseren Switzerland ja da fari. Shekarar ta fara alkawari a farkon kakar wasan 1966 BRDC International Trophy a Silverstone Circuit, tare da Bonnier ya cancanci Cooper a matsayi na shida kuma ya gama na uku, amma sauran kakar wasan ba su kawo farin ciki ba. Wani hadari a zagaye na farko na
Gasar Grand Prix ta Belgium ta lalata Cooper T81 dinsa. Yayin da aka gyara motar Bonnier ya shiga Alf Francis ya gina Cooper-ATS a Grand Prix na Faransa. Bayan da Cooper-ATS ba ta tabbatar da gasa ba a cikin aikin Bonnier ya yi yarjejeniya da ƙungiyar Brabham kuma ya tuka motar su ta baya har ƙarshen karshen mako. An gyara Cooper T81 na Bonnier a kan lokaci don Grand Prix na Dutch bayan ya tuka Brabham BT7 a Grand Prix na Burtaniya. Anglo-Suisse Racing ta farko Championship maki zai zo a kakar rufewa 1966 Mexican Grand Prix, daga wuri na shida.