Petrolheads, assemble: it’s a new Porsche 911 GT3. Which is basically like saying ‘it’s a new Bowie album’ to the music nerds. This is benchmark sports car, the one by which the steering feel, chassis composure and engine response of every other supposed supercar on the market is measured against. The 992 GT3 gets a racecar engine, a ginormous wing and a rather special new knob. And this is what happens when Chris Harris is tasked with running that glorious 4.0-litre flat-six engine in, just so he can open the taps and spank it around a track. Love GT3s? Watch Chris Harris tour his dream garage, where there's every generation of Porsche 911 GT3: https://www.youtube.com/watch?v=wJLmc_M-0ng Subscribe to Top Gear for more videos: http://bit.ly/SubscribeToTopGear WATCH MORE TOP GEAR: Top Gear Series 29: http://bit.ly/TGS29​ Geneva Online Motor Show: http://bit. ly/TGGMS20​ First Look: http://bit.ly/TG-FirstLook MORE ABOUT TOP GEAR: Want to watch a bit of Top Gear on the internet? Welcome to the most comprehensive collection of official clips you'll find on YouTube. Whether you're searching for a caravan challenge, Ken Block in the Hoonicorn, cars versus fighter jets, Stig power laps or the latest Chris Harris Drives, you can find all the iconic films here. Want to share your views with the team? Join our BBC Studios Voice: https://www.bbcstudiosvoice.com/register This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/contact-us/