Porsche has graced us with two incredible RS cars in 2022, and we’re here to find out which is best.

The new GT3 RS isn’t just inspired by motorsport, it’s a full-blown race car. The engine is a 4.0-litre naturally-aspirated flat-six revving to 9,000rpm and producing 518bhp. It’s got 860kg of downforce at 177mph and 406kg at 124mph, well over double those of the 991.2 GT3 RS it succeeds. But worry not, this is still not a slow car - 0-62mph in 3.2 seconds and a top speed of 184mph.

However, if you’ve ever wondered what would happen if Porsche stuffed the stupendous GT3 engine into the back of its mid-engine baby-brother, the Cayman… the GT4 RS is your answer. It’s the most hardcore, powerful and track-hungry Cayman Porsche has ever made. 493bhp, 332lb ft of torque and 0-62mph in 3.4 seconds. The question is, can it give the more expensive GT3 RS a run for its money?

Top Gear Magazine’s Jack Rix and Ollie Marriage give us the rundown on track.

Subscribe to Top Gear for more videos: http://bit.ly/SubscribeToTopGear

Chapters
00:00 Intro
00:36 Porsche's RS Philosophy
01:20 GT3 RS Drive
04:02 GT3 RS vs GT4 RS Top Trumps
05:20 Drag Race
07:53 Downforce Demonstrated + Braking G
13:03 Noise
14:45 Track Battle
17:38 Which One We Would Have

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/