Cika jumla mai zuwa: Baya ga haɓaka injin da Honda ta gabatar don, McLaren ya kawo sabon kunshin aerodynamic don MP4-30 wanda ya sake duba fuka-fuki na gaba don ƙara ƙarfin turawa, ya canza fuka-fukan juyawa don inganta kwararar iska a kan mai rarraba gaba, kuma ya ɗauki ra'ayi wanda Ferrari ya fara zuwa bene na baya wanda aka tsara don rage tasirin wankewar iska a kan ƙafafun baya da kuma rushe mai rarraba baya, wanda hakan ya buɗe mafi girman kewayon zaɓuɓɓukan saiti don tsayin tafiya da rake, ko kusurwa tsakanin tsayin tafiya na gaba da na baya. An tsara waɗannan sabuntawa don kawo MP4-30 daidai da ƙirar da wasu ƙungiyoyi suka haɓaka. Tare da injin da sabuntawar iska, ƙungiyar ta yi fatan yin gasa don maki akan cancanta, kuma yayin da Alonso ya yi karo da Felipe Massa a zagaye na farko, yana gudu har zuwa na biyar a kan matakan rufewa - kuma yana kan hanya don yin kwafin mafi kyawun sakamakon ƙungiyar na kakar - kafin ya sha wahala daga asarar iko kuma ya sake komawa baya don gama na goma sha ɗaya. Tare da Alonso daga maki, Button ya ci gaba zuwa na shida. Gasar ta kuma ga abin da zai zama mafi kyawun wasan motsa jiki na motar yayin da Alonso ya fara na goma sha ɗaya, yayin da maki shida da Button ya zira kwallaye ya ga ƙungiyar ta kusa da maki goma na Sauber a Gasar Masu Gina Duniya. Koyaya, sakamakon ya kuma nuna cewa McLaren ya jimre da mafi tsayi ba tare da nasara ba na tsere hamsin da uku, wanda aka saita a baya tsakanin
1977 Grand Prix na Japan da kuma 1981 Birtaniya Grand Prix. Duk da ci gaban da ƙungiyar ta samu a zagaye na baya, gwagwarmayar MP4-30 ta ci gaba a Mexico, tare da duk direbobin biyu da aka fitar da su a farkon cancantar, kuma Jenson Button ya kafa sabon tarihi don hukuncin grid, yana canza isassun sassan da ke ba da damar hukuncin wuri saba'in. Alonso ya yi ritaya daga tseren tare da matsalar ERS wanda ba za a iya magance shi ba wanda ƙungiyar ta gano daren da ya gabata kuma Button ya gama na goma sha huɗu a gaba ɗaya.