Marmoush’s goals were his first for City in his fifth appearance and lifted spirits ahead of next week’s daunting Champions League trip to Real Madrid, where Pep Guardiola’s side will attempt to overturn a 3-2 deficit.
The £59million January signing from Eintracht Frankfurt struck three times in the space of 14 minutes as the champions crushed one of their top-four rivals at the Etihad Stadium to climb to fourth in the Premier League.
New signing Omar Marmoush scored a scintillating first-half hat-trick as Manchester City rediscovered their spark in an emphatic 4-0 win over Newcastle.
Although Newcastle offered little, City looked more like the side that has won the past four titles than the one that has laboured through most of this campaign.
His opener came after 19 minutes as he latched onto a long ball from Ederson, the ball bouncing invitingly over Kieran Trippier’s head.
