The McLaren 750S is powered by the bespoke M840T 4.0-litre V8 twin-turbo engine, producing 750 hp and 800 Nm of torque. Compared to the previous 720S, 30% of the 750S's components are newly designed, including lightweight pistons from the 765LT, a higher-flow fuel pump, and a new ECU, resulting in a 30 hp increase.
McLaren 750S 沿用量身訂做嘅 M840T 4.0 公升 V8 雙 Turbo 引擎,馬力輸出 750 匹,扭力 800 Nm。相比上一代 720S,750S 有 30% 零件係全新設計,包括引用 765LT 嘅輕量化活塞、加大流量汽油泵同新 ECU 程式,令馬力增加咗 30 匹。