It’s a 3.8-litre 90-degree V8 mounted amidships and producing ‘around 600bhp and 443lb ft’. ‘It delivers the highest horsepower to CO2 ratio of any car on the market today with an internal combustion engines – and that includes petrol and diesel hybrids,’ boasts Antony Sheriff, MD of McLaren Automotive. Expect a CO2 output somewhere just south of 300g/km.
Contrary to earlier speculation, this is McLaren’s own V8, dubbed M838T and breathed on by twin turbos and driving the rear wheels through a seven-speed dual-clutch gearbox (no manual is available). The V8 has a dry sump and a flat-plane crank like a race engine, to lower the centre of gravity and allow a higher rev limit of 8500rpm.