Akukakapheli lapho sesizwile i-4.0 atmospheric V12 kaCosworth ebhentshini lokuhlola. I-GMA T.50 memeza ngo-11,500 rpm - lapho ifinyelela amandla ayo aphezulu angu-663 hp - noma, isibindi, shaya isinqamuli ngo-12,100 rpm.
Kodwa kuvidiyo yakamuva evela ku-Gordon Murray Automotive sibona futhi sizwe imoto enkulu yaseBrithani entsha futhi, nakuba "ingakwazi" ukudonsa" phansi kuphela ku-5000 rpm. Ngenkathi i-XP2 test prototype iphuma okokuqala emgwaqeni, kwakungavunyelwe ngaphezu kuka-3000 rpm.
Kodwa uma kuzwakala kahle kakhulu ku-5000 rpm emgwaqweni, singacabanga nje ukuthi kuzozwakala kanjani ku-12,100 rpm.
Ividiyo yakamuva ekuthuthukisweni kwe-GMA T.50 isibuyisela emuva e-Dunsfold aerodrome (umzila wezindiza we-Top Gear) futhi. Kuyo sibona ukuthi i-XP2 test prototype, esivele ibonisiwe esikhathini esidlule, manje isihambisana ne-XP3 yesibili yokuhlola.
U-Gordon Murray akazange aphuthelwe yithuba lokuhlala maphakathi nendalo yakhe futhi athathe imizuliswano “yokuhlola” yesekethe, manje ephelezelwa, kumfanekiso wesibili, umshayeli wokuhlola nokuthuthukisa u-Steve Hayes.
Mayelana "Nesiqalo Esibandayo". Kusukela ngoMsombuluko kuya kuLwesihlanu e-Razão Automóvel, kune-“Cold Start” ngo-8:30 ekuseni. Njengoba uphuza ikhofi lakho noma uba nesibindi sokuqala usuku, hlala unolwazi lwakamuva ngamaqiniso ajabulisayo, amaqiniso omlando namavidiyo abalulekile avela emhlabeni wezimoto. Konke ngamagama angaphansi kwama-200.