The McLaren 750S is 30 kg lighter than the 720S, with a dry weight of just 1,277 kg (the Spider is 49 kg heavier, at approximately 1,326 kg). The weight savings come from new carbon fibre racing seats, lighter forged wheels (13.8 kg lighter), and a single-exit exhaust system. The 750S achieves a power-to-weight ratio of 587 hp per tonne, making it one of the lightest supercars in its class.
McLaren 750S 比 720S 輕咗 30 kg，乾重只有 1,277 kg（Spider 版重 49 kg，約 1,326 kg）。輕量化主要來自全新碳纖維賽車座椅、更輕嘅鍛造輪圈（輕 13.8 kg）同單出式排氣喉。750S 嘅功率重量比達到每噸 587 匹，係同級最輕嘅超跑之一。
