9kii Maarso 2015, kooxda Manor Marussia ayaa ku dhawaaqday in Merhi uu ku wadi doono, oo ay weheliyaan Will Stevens oo reer Britain ah. Si kastaba ha noqotee, Marussia kuma tartamin Australia dhibaato farsamo awgeed. Tartanka Grand Prix ee Malaysia, Merhi wuxuu ku tartamay tartankiisii ugu horreeyay ee Formula One inkasta oo dhibaatooyin ay soo wajahday gaariga saaxiibkiis Stevens. Merhi wuxuu ku guuldareystay inuu waqti wareeg ah ku dhajiyo 107% waqtiga ugu dhakhsaha badan ee Q1, laakiin garsoorayaasha tartanka ayaa u oggolaaday Merhi inuu bilaabo tartanka. Merhi wuxuu dhamaystay kaalinta 15-aad, 3 wareeg oo ka dambeeya tartanka guuleystaha Sebastian Vettel. Tartanka Grand Prix ee Shiinaha, Merhi wuxuu ku dhammeeyey kaalinta 16-aad oo ka dambeysa saaxiibkiis Stevens. Bahrain iyo Spain Merhi ayaa sidoo kale ka dambeeyay Stevens. Si kastaba ha ahaatee, tartanka Monaco Grand Prix
Merhi wuxuu dhamaystay kaalinta 16-aad isagoo ka horeeya Stevens. Tartanka Grand Prix ee Kanada, Merhi wuxuu ka soo horjeestay Stevens wuxuuna bilaabay kaalinta 16aad mahadsanid ganaaxyada Sebastian Vettel iyo Max Verstappen. Sidoo kale Jenson Button ayaa ku guuldareystay inuu waqti ku dhameeyo isreebreebka sababtoo ah mashiinkiisa ayaa ku dhacay. Tartanka, Merhi wuxuu daqiiqad ka horeeyay Stevens laakiin wareegga 56aad, waxaa lagu qasbay inuu ka fariisto dhibaato ka dhalatay mashiinka. Waxay ahayd markii ugu horeysay ee Merhi uu ku guuldareysto inuu dhammeeyo tartan Formula One ah oo uu bilaabay, laakiin wuxuu ka sii horreeyay Stevens Horyaalka Wadayaasha. Dalka Austria, Merhi wuxuu dhammeeyay kaalinta 14-aad, 3 wareeg oo ka dambeeya tartanka guuleystaha Nico Rosberg. Merhi waxaa laga saaray Alexander Rossi shan ka mid ah toddobadii abaalmarino ee ugu dambeeyay ee 2015, marka laga reebo Ruushka iyo Abu Dhabi, ka hor inta aan loo dhigin Formula E 2017 iyo Formula 2 2018.