Rubuta ci gaba don wannan sakin layi - A cikin 1966, FIA ta ninka girman injin daga 1.5 zuwa lita 3, wanda ya ga motocin sun yi tsere da sauri a kan waƙoƙi da kayan aiki ba canzawa tun kafin Yaƙin Duniya na II. Wannan ya haifar da haɗarin mutuwa da yawa. Mutuwar tauraron dan wasan Chapman Jim Clark a Hockenheimring a tseren Formula Two a shekarar 1968 ya kasance wani juyi: wasu direbobi, ciki har da maye gurbin Clark na Lotus, Jochen Rindt, da kungiyar Grand Prix Drivers 'Association (GPDA), sun fara tambayar lafiyar wasan. Rindt da kansa ya mutu a lokacin gwaji a 1970 Italian Grand Prix
; an ba shi lambar yabo ta direbobi a wannan shekarar.