 Nyora kuenderera mberi kweiyi ndima - Muna Kukadzi 2015, Manor Marussia yakazivisa Stevens semumwe wevatyairi vavo vachiunza mari yakawanda kuchikwata, pamwe naRoberto Merhi. Marussia akapinda muAustralia Grand Prixasi haana kukwikwidza nokuda kwedambudziko rezvemichina. MuMalaysian Grand Prix Stevens akatyaira mota yeMarussia kekutanga muKudzidzira 1. Zvisinei, haana kukwikwidza mumakwikwi kana mumakwikwi nemhaka yechinetso nehurongwa hwemafuta. MuChinese Grand Prix Stevens akapedza mujaho wake wekutanga weMarussia ari pachinzvimbo chegumi neshanu pamberi pemumwe wake Merhi mushure mekupfuura kaviri nemukundi wemakwikwi Lewis Hamilton. Stevens akapedza ari pamberi paMerhi muBahrain neSpain. Akapedza ari shure kwaMerhi muMonaco Grand Prix ari wechi16. MuCanada Grand Prix akakwanisa kuseri kwaMerhi asi akakwira kusvika 17th nekuda kwezvirango kuna Jenson Button, Sebastian Vettel naMax Verstappen. Mumakwikwi ari pa lap 52, Romain Grosjean weLotus akanga achitenderera Stevens asi akacheka gumbo rake reruboshwe rekumashure achidaro izvo zvakaita kuti vatyairi vaviri vaite kumira kwechimbichimbi. Vagadziri vemotokari dzeLotus neMarussia vakanga vasina nguva yakawanda yokuita chimwe chinhu apo vatyairi vavo vaipinda mumakomba, saka Grosjean naStevens vakambomira kwenguva refu. Stevens akanyunyuta kuchikwata chake paredhiyo pamusoro pechiitiko chacho. Grosjean akapiwa chirango chemasekonzi mashanu nokuda kwokuputika asi Stevens akanga aderera kubva pakuva masekondi mana shure kwaMerhi kusvika kuminiti shure kwake. Zvisinei, Merhi akamanikidzwa kurega kutenderera 56 mushure mekunge dambudziko re drive-shaft. Stevens pakupedzisira akapedza ari pachinzvimbo chechi17, ari kumashure kwedenderedzwa ina pane mukundi Lewis Hamilton. Pashure pomutambo, Grosjean akakumbira ruregerero kuna Stevens nokuda kwechiitiko chacho. Mumakwikwi ekupedzisira emwaka, Merhi akatsiviwa naAlexander Rossi uyo akapfuura Stevens mumakwikwi matatu kubva pamakwikwi mana. 