Buuxi weedha soo socota:, M12 waxaa loo beddelay M12/13/1. (Bore 9.2 mm X Stroke 60 mm) 374.95 cc iyo 350 PS halkii silsilad 933.46 PS/litir Waxaa la sheegay in noocaani uu soo saaray wax soo saarkii ugu badnaa ee ku habboonaanta isreebreebka, taas oo ka dhigi lahayd mashiinka ugu awoodda badan ee abid lagu tartamo Formula 1, oo leh turbo ama wax kale. Waqtigaas, ma jirin hab lagu si sax ah u cabbiro tirooyinka horseed ee ka sarreeya 1,000, sidaa darteedna tirooyinka wax soo saarka ee la sheegay ayaa guud ahaan la aqbalay oo laga soo qaatay xisaabinta aragtida injineerada; tusaale ahaan, 0.1 bar ee kor u qaadista turbo ayaa lagu qiimeeyay inay u dhiganto qiyaastii). Intii lagu guda jiray
1986 Italian Grand Prix ee Monza, Gerhard Berger's BMW-powered Benetton B186 ayaa diiwaan galiyay xawaaraha tooska ah ee ugu sarreeya ee loo yaqaan 'Formula One car car' markii uu ku jiray. Xaqiiqdii, shanta gawaarida ugu sareysa ee ka gudubtay dabinka xawaaraha ee Monza (Berger iyo saaxiibkiis Teo Fabi, Brabham's Derek Warwick iyo Riccardo Patrese, iyo Arrows of Thierry Boutsen) dhammaantood waxaa ku shaqeeyey BMW M12.