Ku qor sii wadida faqradan - Sannadkii 1985, MP4/2 waxaa lagu cusbooneysiiyay hawo hawo nadiif ah iyo baalal dib loo qaabeeyey (si loo waafajiyo xeerarka cusub ee mamnuucay "baalal" baalasha gadaal ee gawaarida la isticmaali jiray ilaa 1983) waxaana loo bixiyay "MP4/2B", halka Porsche ay hagaajisay matoorka TAG oo leh awood kororsi (tartanka iyo isreebreebka) iyo isticmaalka shidaalka. Qalabka ayaa dib loo naqshadeeyay ka dib markii McLaren lagu qasbay inay ka beddelaan Michelin si ay u isticmaalaan taayirada Goodyear markii shirkadda Faransiiska ay ka baxday Formula One. Si kastaba ha ahaatee, tartanka ayaa in ka badan ama ka yar qabsaday. Michele Alboreto oo wata &lt;a href="Ferrari%20156/85"&gt;Ferrari 156/85&lt;/a&gt; ayaa la dagaalamay Prost inta badan xilli ciyaareedkii, illaa markii McLaren lagu kalsoonaan karo oo ay ka sarreeyaan wareegyada xawaaraha sare ee raacay labada horyaal. Prost wuxuu ku guuleystay horyaalkiisii ugu horreeyay isagoo 5 guul ah gaaray wuxuuna ku soo gabagabeeyay horyaalkii isagoo laba wareeg oo kale oo uu sii wado isagoo dhammaystiray 4aad ee lagu xisaabiyay Grand Prix Yurub
at Brands Hatch (Prost wuxuu qirtay inuusan jeclayn 'wadida dhibcaha' sida uu ku lahaa Brands iyo tartankii hore ee Belgium, laakiin ka dib markii uu lumiyay labadii horyaal ee ugu dambeeyay kaliya 2 iyo 1⁄2 dhibcood siday u kala horreeyaan, ma uusan dooneynin inuu halis u galo inuu lumiyo mar saddexaad). McLaren waxay sheegatay horyaalkeedii labaad ee soo socota ee dhismayaasha, iyagoo dhaliyay 90 dhibcood ilaa Ferrari 82, iyadoo Williams-Honda iyo Lotus-Renault ay ku wada siman yihiin 71 dhibcood, in kasta oo Williams ay ku guuleysatay afar tartan ilaa Lotus saddex.