What is the McLaren 720S GT3X? New £750k special edition review | Autocar

Essentially it’s a racing car that can’t race. It’s also arguably the fastest GT3 car on the planet. How so? Well, McLaren’s motorsport minds decided to see what it would be like if they took their successful 720S racer and turned the wick up - a lot - to create one of the quickest trackday weapons a substantial amount of money can buy. To do this, they dumped the FIA specification, power restricted 500bhp twin-turbo 4.0-litre V8 and dropped in a 710bhp version that could be boosted to 740bhp at the touch of a button with a push-to-pass system. That’s not all. Because this is intended as a track day car, McLaren modified the rollcage and carbon tub to accept a passenger seat - for a brave friend or, more likely, an instructor. The rest of the car is pure GT3 racer, right down to the outrageous-looking aero, track-honed suspension and slick tyres. There’s also multi-stage operation for the traction control and ABS brakes. Just 15 of these special machines will be built, each costing a very cool £750,000. That’s a lot of cash, so is the McLaren worth it. Our man James Disdale was strapped in for a few quick(ish) laps of the Navarra circuit in Spain to find out. New videos are uploaded to Autocar each week. Don't miss a single one. Subscribe now: http://smarturl.it/autocar Visit our website at http://www.autocar.co.uk Autocar, the world's leading motoring magazine and website, delivers industry-leading news, the most in-depth car reviews and opinion from our team of experts. Our presenters include some of the world's top motoring journalists who have unrivalled access to the world's fastest, rarest, most exotic and most exciting cars on some of the world's best roads and race tracks. Follow AUTOCAR here: LIKE Autocar on Facebook: https://bit.ly/2Jzyvh1 FOLLOW Autocar on Twitter: https://bit.ly/2JzABgT FOLLOW Autocar on Instagram: https://bit.ly/2TIgvFI Check out our full video catalog: https://bit.ly/1UfAOCH For car reviews you can trust, subscribe to Autocar: http://smarturl.it/autocar