With the GT R Pro, Mercedes-AMG is squaring up to the Porsche 911 GT3 RS. It gets no more power than the regular GT R, but a comprehensive aerodynamic and chassis overhaul gives it far greater on-track performance.

Autocar's Dan Prosser drives the GTR Pro at Hockenheim in Germany to find out if it's as big a step on from the GT R as the upgrades suggest.

New videos are uploaded to Autocar each week. Don't miss a single one. Subscribe now: http://smarturl.it/autocar

2018 Mercedes-AMG GT C vs Porsche 911 Carrera T: https://www.youtube.com/watch?v=uLHsH40Ulkg&t=246s

2018 Mercedes-AMG GT R: https://www.youtube.com/watch?v=jmDL1RBl12k&t=2s

2019 Mercedes-AMG GT63 S: https://www.youtube.com/watch?v=vmqf_5AJy-4&t=48s

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