McLaren 720S vs Porsche 911 GT3 RS

Driving Character: McLaren 720S vs Porsche 911 GT3 RS

The McLaren 720S remains a benchmark for mid-engined supercar performance, pairing a 710 hp twin-turbo V8 with a sophisticated Proactive Chassis Control system. This allows it to span the gap between a supple grand tourer and a track-slaying weapon with a simple mode adjustment. The carbon fibre monocoque provides a remarkably rigid platform, allowing the suspension to work with precision. While turbo lag is present at low revs, the relentless mid-range surge is intoxicating. Steering remains communicative, though the sheer scale of the performance often outpaces the driver’s ability to fully explore the car's limit on public tarmac.

The Porsche 911 GT3 RS is essentially a road-legal race car, featuring aggressive aerodynamic aids that generate genuine downforce. The 4.0L flat-six is at its most extreme here, delivering 518hp with a razor-sharp throttle response. The chassis is incredibly stiff, tuned for maximum track precision, which makes for a highly intense driving experience on public roads. The steering feel is unparalleled, transmitting every nuance of the road surface directly to the driver’s palms. It is a machine that demands complete, unwavering commitment, rewarding the skilled pilot with performance levels that exceed almost anything else in the production world.

Head-to-head, the division is clear: the Porsche 911 GT3 RS takes our 0-100 driving character grading, 93 against 97. Characteristic of the McLaren 720S: Exceptional, communicative handling widely rated among the best-driving supercars. For the Porsche 911 GT3 RS: The most extreme naturally-aspirated 911, drenched in motorsport aero technology. In outright terms it is 710 hp against 518 — a 192 hp gap — and the McLaren 720S reaches 60 mph 0.2s sooner.

Interior & Cabin: McLaren 720S vs Porsche 911 GT3 RS

The cabin design prioritises visibility and function, featuring a unique folding instrument display that creates a clean, distraction-free environment for circuit work. Carbon fibre and Alcantara are the primary materials, imparting a tech-forward, high-end feel that justifies its market position. The primary weakness lies in the infotainment system, which is notoriously dated and struggles with basic connectivity compared to its rivals. However, the F1-inspired driving position and the sheer amount of glass in the dihedral doors create an airy, commanding environment that makes the 720S feel far more approachable than its rivals from Maranello or Sant'Agata.

Inside, the Porsche 911 GT3 RS is stripped to the bone, with CFRP door panels and a roll cage serving as the primary design features. Carbon bucket seats are standard, locking the driver in place for high-G maneuvers. The cabin is purposefully sparse, lacking luxury padding in favour of weight-saving measures that prioritize speed. While road and wind noise are prominent at motorway speeds due to the lack of sound deadening, this is expected in a model of this focus. Everything is designed to be functional and lightweight, creating a pure, motorsport-inspired workspace that keeps the driver focused on the tarmac.

Head-to-head, the division is clear: the McLaren 720S takes our 0-100 interior & cabin grading, 74 against 55. Characteristic of the McLaren 720S: Distinctive, driver-focused cockpit with excellent visibility for a supercar. For the Porsche 911 GT3 RS: Motorsport-focused cabin, similar to the GT3 but more stripped-back.

Daily Usability: McLaren 720S vs Porsche 911 GT3 RS

For a vehicle capable of 212 mph, the 720S is surprisingly adept at daily errands. The adjustable suspension mode turns the car into a compliant, smooth-riding machine that handles city driving with unexpected composure. The front trunk provides a modest 150-litre space, perfect for an overnight bag, though owners must rely on the front nose lift to negotiate even minor driveways. Ingress is made easier by the dihedral doors, but the wide sills still demand a degree of flexibility. Provided one keeps a close eye on ground clearance, it is perhaps the most versatile supercar of its generation.

Daily usability is deliberately limited in the Porsche 911 GT3 RS, though it remains technically legal for the road. The nose lift system is a necessity for clearing urban obstacles, preventing damage to the sophisticated front splitter. Storage is limited to the front trunk, which is adequate for track day essentials but not for large loads. Ingress and egress are physically demanding, requiring one to clear the roll cage. The suspension is too firm for comfort on broken surfaces, making long-distance commuting fatiguing. It is a specialized weapon meant for the circuit, not a daily companion for errands.

Head-to-head, the division is clear: the McLaren 720S takes our 0-100 daily usability grading, 55 against 45. Characteristic of the McLaren 720S: Usable as an occasional daily supercar. For the Porsche 911 GT3 RS: Usable daily if you accept its extreme, track-bred intensity. that means 150 litres of boot space against 132, and everyday running costs that favour the McLaren 720S at the pumps.

Ownership: McLaren 720S vs Porsche 911 GT3 RS

Maintaining a 720S is a significant commitment, with annual service costs averaging £3,000, though this is a standard entry fee for the tier of performance provided. The McLaren dealer network is well-established, and the 3-year unlimited mileage warranty provides necessary coverage for the complex drivetrain. Used prices have settled into a range that offers significant value for money compared to the original £225,000 sticker price, making it an attractive prospect for performance-focused buyers. While turbo and transmission maintenance costs are non-trivial, the car’s desirability and strong standing in the enthusiast community ensure that it remains a sound long-term investment.

Owning a Porsche 911 GT3 RS is a commitment to the pinnacle of naturally aspirated performance, and it carries the costs to match. With its motorsport-derived components, maintenance is frequent and expensive, requiring specialist knowledge that the Porsche Motorsport network provides. Insurance premiums are significant given the car’s market value and performance potential. However, its scarcity and extreme engineering ensure that it remains a high-value asset, with strong residuals and a dedicated community of owners. It is a long-term investment that requires dedicated resources but pays off with an experience that few other machines can provide.

Head-to-head, the division is clear: the Porsche 911 GT3 RS takes our 0-100 ownership grading, 70 against 80. Characteristic of the McLaren 720S: Strong performance-per-dollar reputation on the used market. For the Porsche 911 GT3 RS: Strong Porsche reliability and huge collector demand. On the wallet the two diverge at £125,000 versus £178,000 — a £53,000 difference, with annual maintenance of £3,000 against £1,700, and warranty cover of 3yr / unlimited mi versus 4yr / 50k mi.

More comparisons to explore

• McLaren Artura vs McLaren 720S
• Ferrari 488 GTB vs McLaren 720S
• Ferrari F8 Tributo vs McLaren 720S
• Mercedes-AMG GT vs McLaren 720S
• Porsche 911 GT2 RS vs McLaren 720S
• Lamborghini Huracán vs McLaren 720S