Kammala jumla mai zuwa: Fabi ya tuka Benetton Formula a cikin Benetton B186-BMW M12 mai lamba 19 bayan da aka karɓi Toleman gaba ɗaya kafin kakar 1986 don zama Benetton, tare da injina masu ƙarfi (matsayi), da ƙwararren matashin Austrian Gerhard Berger ya shiga. Benetton ya kasance mai sauri amma mai rauni tare da tayoyin Pirelli masu wahala kuma Fabi sau da yawa ya cancanta fiye da yadda ya yi tsere. Ya gudanar da matsayi na farko a Grand Prix na Austrian da kuma
Gasar Grand Prix ta Italiya amma mafi kyawunsa shi ne na biyar a Gasar Grand Prix ta Spain. Ya sami suna na kasancewa mafi gasa a kan hanyoyi masu sauri kuma yana gwagwarmaya a kan jinkirin, hanyoyin da suka fi dacewa. Dukkanin bangarorin biyu sun kasance a kan hanyoyi biyu mafi sauri a kan kalandar 1986, Österreichring da Autodromo Nazionale Monza. Ya ƙare kakar wasa ta goma sha biyar a maki.