Which of the two most potent Porsche 911s on sale is quickest around a track? Steve Sutcliffe straps himself in for this track battle to find out. Read more at Auto Express: 2021 Porsche 911 GT3 review: https://aex.ae/3vbdWKH 2021 Porsche 911 Turbo S review: https://aex.ae/2zImodc The Porsche 911 GT3 and Turbo S are two very different interpretations of a fast 911. The Turbo S uses raw firepower, four-wheel drive and secure handling to decimate the road in front of it, while the GT3 uses a sharp, naturally aspirated flat-six, two driven wheels and less weight to scythe around a track. Which is best? Steve Sutcliffe takes each to the limit, against the stopwatch, to reveal all. More Auto Express videos: Car reviews playlist: http://aex.ae/2gY4ViX Track battle playlist: https://aex.ae/2U8yvdf Car news playlist: https://aex.ae/3vyKA8G Follow us Twitter: https://twitter.com/AutoExpress Facebook: https://www.facebook.com/AutoExpress Instagram: https://www.instagram.com/autoexpressmagazine