Performance Review: Porsche 911 GT3 RS 4.0 991 - [2015]

Figures & Specs Summary:

Porsche 911 Performance Review.

Introduction:

This edition of the Porsche 911 GT3 RS 4.0 991 is the 7 speed / Paddle Shift version and was first brought out in 2015. This was at around the same time as the introduction of the 2016 Bugatti Chiron 8.0 W16 Quad Turbo and the 2015 Koenigsegg Regera 5.0 V8 Turbo.This particular Porsche 911 has a 3996cc Naturally Aspirated Petrol powerplant with 6 cylinders in a F formation.

Alternative Petrol F6's includes the 2017 Porsche 911 GT2 RS

The 911 shares its Petrol F6 engine configuration with the likes of the 2017 Porsche 911 GT2 RS and the 2016 Porsche 911 Turbo S 991 II. If you're looking for other fast cars which share the 911's Rear Wheel Drive, Coupe combination then how about the 1982 Fiat X1/9 1.5 8V or the 1965 Aston-Martin DB6 1965.

Power and Weight:

Weighing in at 1420 kgs (3130 lbs) this makes the Porsche 911 GT3 RS 4.0 991 in the same weight category as the 2022 Lotus Emira First Edition 3.5 V6 Supercharged or the give or take 50kg.

The Porsche 911 shares the same bhp with the 2024 Ford Mustang Dark Horse 5.0 V8 (500 bhp)

In terms of power the 3996cc 24V F6 engine produces 493 bhp (367 kW) @ 8250 rpm similar to the 2024 Ford Mustang Dark Horse 5.0 V8 (500 bhp) or the 2023 Porsche Boxster Spyder RS 4.0 982 (493 bhp).

The Naturally Aspirated F6 throws out 339 lb-ft (459.6 Nm) @ 6250 rpm placing it with cars of similar torque performance figures such as the 2023 Lotus Emira First Edition i4 2.0 Turbo (317 lb-ft) or the 2023 Porsche Boxster Spyder RS 4.0 982 (332 lb-ft).

Power to Weight:

If one combines the weight with power or torque performance for the Porsche 911 you can get a better idea of it's real world performance.

The 2022 Aston-Martin Vantage 5.2 V12 Twin Turbo Roadster (371.9 bhp per ton) has similar Bhp Per Ton stats as the Porsche 911.

The Porsche 911 has a Power to weight ratio of 347.1 bhp per ton and 238.7 lb-ft per ton. Bhp Per Ton figures of the 2015 911 competing with the 2022 Aston-Martin Vantage 5.2 V12 Twin Turbo Roadster (371.9 bhp per ton) or the 2006 Mercedes SLR Class McLaren 722 Edition (371.8 bhp per ton).

Power to Weight(cont.):

If you agree with the late great Carroll Shelby then arguably an even better indicator of potential performance, Torque. Use weight as well and you end up with - Torque per ton, with the Porsche 911 generating around 238.7 lb-ft per ton. If you're curious as to what other cars have as much torque to weight then look no further than the 2003 TVR T350 C 3.6 (263.6 lb-ft per ton) or the 2004 TVR T350 T 3.6 (263.6 lb-ft per ton).

Acceleration:

With a 0-60mph time of 3.10 secs or a 0-100km/h (0-62mph) of 3.2 secs, this made the Porsche 911 GT3 RS 4.0 991 as fast as the 2022 Aston-Martin DBX 707 4.0 V8 Twin Turbo (3.10 secs) the 2022 Porsche 911 GT3 RS 992 (3.10 secs) the 2022 Lamborghini Urus Performante Twin Turbo (3.10 secs) the or the 2021 Porsche Cayenne GT 4.0 V8 Bi-Turbo (3.10 secs). This Porsche 911 GT3 RS 4.0 991 is also faster than the 2023 Aston-Martin DBS 770 Ultimate 5.2 V12 Twin Turbo (3.20 secs) the 2022 Porsche 911 Dakar 3.0 Turbo 992 II (3.20 secs) the 2021 BMW 5 Series M5 4.4 V8 Turbo F90 (3.20 secs) the and the 2021 Porsche 911 GT3 PDK 992 (3.20 secs).

Quarter Mile time is a close race between the 911 and the 2017 Volkswagen-VW Golf R 4Motion 2.0 Turbo

When talking about the performance of the Porsche 911 on the drag strip it can reach a quarter mile in an estimated 11.87 secs @ 115.2 mph. Similar performance down the quarter mile can be found with the the 2017 Volkswagen-VW Golf R 4Motion 2.0 Turbo (11.82 secs), the 1983 Bentley Mulsanne 6.8 V8 Turbo (11.84 secs), and the 1995 Caterham Super 7 1.6 16v (11.84 secs).

Top Speed:

Modern performance cars are often artificially restricted to 155mph. The 2015 version of the Porsche 911 GT3 RS 4.0 991 has a maximum speed of 193mph.

Top Speed of the 2015 911 equals the 2020 Audi R8 Performance 5.2 V10 Spyder (204 mph)

If maxing out your car on the AutoBahn is your thing and you're wondering what's faster than the 2015 Porsche 911 GT3 RS 4.0 991 then how about the 2020 Audi R8 Performance 5.2 V10 Spyder (204 mph), the 2018 McLaren 600LT 3.8 V8 Bi-Turbo (204 mph), or the 2017 McLaren 570 S Spider 3.8 V8 Twin Turbo (204 mph).

Related Links:

2015 911 Rivals List.

A Brief History of Porsche

Car Comparison