Porsche 911 GT3 vs Porsche 718 Spyder RS
Compare the Porsche 911 GT3 vs Porsche 718 Spyder RS. The Porsche 718 Spyder RS is £13,000 cheaper. The Porsche 911 GT3 is 0.2s quicker to 60mph. The Porsche 718 Spyder RS is more fuel efficient. Full performance, cost & ownership breakdown.
The Porsche 911 GT3 is priced from £143,000, powered by a 4.0L Flat-6, producing 502 hp, with 347 Nm of torque, reaching 0-60 mph in 3.2s, a top speed of 197 mph, sent to the road via rear-wheel drive. The Porsche 718 Spyder RS is priced from £140,000, powered by a 4.0L Flat-6, producing 493 hp, with 450 Nm of torque, reaching 0-60 mph in 3.4s, a top speed of 196 mph, sent to the road via rear-wheel drive.
The Porsche 911 GT3 offers a 132-litre boot, a usable front boot, runs on petrol, returns around 23 mpg, is covered by a 4yr / 50k mi warranty. The Porsche 718 Spyder RS offers a 125-litre boot, a usable front boot, runs on petrol, returns around 23 mpg, is covered by a 4yr / 50k mi warranty.
On cost of ownership, the Porsche 718 Spyder RS is £13,000 cheaper than its rival, the Porsche 718 Spyder RS costs less in annual maintenance (£1,500 versus £1,400), a full tank costs around £85 for the Porsche 911 GT3 and £70 for the Porsche 718 Spyder RS.
Driving Character: Porsche 911 GT3 vs Porsche 718 Spyder RS
The Porsche 911 GT3 remains the benchmark for naturally aspirated sports cars. Its 4.0L flat-six is a masterpiece of linear power delivery, revving to a crescendo that defines the driving experience. The chassis balance is near perfect, thanks to its sophisticated double-wishbone front suspension, which provides telepathic steering feedback. On the road, it is a demanding partner that requires focus, yet it rewards the driver with an analogue feel that is largely absent from its turbocharged peers. Every gearshift, whether manual or PDK, is crisp and intentional, cementing its position as a true driver-focused machine for the real world.
The Porsche 718 Spyder RS is defined by its mid-engine configuration and the installation of the 4.0L flat-six from the GT3. The chassis is a masterpiece of precision, featuring RS-specific suspension geometry that rewards technical accuracy. The steering feel is sharp and communicative, offering a visceral connection to the tarmac that few modern roadsters can replicate. While it is certainly capable on a track, the engine note and open-top architecture make it a raw experience on winding B-roads. The gearshifts are lightning fast, ensuring the powertrain remains at the heart of the driving sensation throughout every spirited corner.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 driving character grading, 96 against 94. Characteristic of the Porsche 911 GT3: Visceral, naturally-aspirated, motorsport-derived engagement. For the Porsche 718 Spyder RS: GT4 RS power in an open-top body - visceral and track-honed. In outright terms it is 502 hp against 493 — a 9 hp gap — and the Porsche 911 GT3 reaches 60 mph 0.2s sooner.
Interior & Cabin: Porsche 911 GT3 vs Porsche 718 Spyder RS
The cabin of the Porsche 911 GT3 is a focused environment, blending high-end technology with a driver-centric design. Alcantara and carbon fibre trim are standard, providing a tactile, high-quality feel that mirrors the car’s track-ready intention. The instrumentation is clear and uncluttered, ensuring that vital information is at the driver's fingertips. While the rear seats are removed to save weight, the front interior remains comfortable enough for a spirited drive across continents. The ergonomics are peerless, placing every control in the perfect position for intuitive use during high-speed operation, reflecting the deep thought Porsche invests in its driver interface.
Inside, the Porsche 718 Spyder RS prioritises weight saving over luxury. The carbon fibre bucket seats provide immense support, while the use of fabric door pulls and minimal sound insulation highlights its motorsport heritage. Build quality is characteristically high, though the cabin environment is undeniably sparse compared to a standard 718. The infotainment system is functional rather than flashy, providing necessary data without distracting from the task of driving. Despite the lack of plush padding, the driver-focused ergonomics remain impeccable, creating a purposeful space that reflects the uncompromising nature of the vehicle’s design philosophy.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 interior & cabin grading, 62 against 52. Characteristic of the Porsche 911 GT3: High-quality cabin with genuine everyday habitability. For the Porsche 718 Spyder RS: Stripped-back, motorsport-focused cockpit.
Daily Usability: Porsche 911 GT3 vs Porsche 718 Spyder RS
Despite its hardcore reputation, the Porsche 911 GT3 is surprisingly usable for an enthusiast. The dimensions are well-suited to narrow UK lanes, and the front lift system helps preserve the front bumper over speed humps. While the suspension is undeniably firm, it is well-damped, avoiding the harshness found in more extreme models. Luggage capacity is sufficient for a weekend of touring, with both the front and rear shelf area providing storage. It functions well for urban errands, though the engine’s performance is clearly happiest when given the space to stretch its legs on a challenging back road.
Daily utility is clearly secondary to performance in the Porsche 718 Spyder RS, yet it remains surprisingly manageable. The inclusion of a nose lift system as standard allows for navigation over urban speed bumps and steep inclines without damaging the front splitter. Storage is adequate for a weekend getaway, with both a front boot and a rear luggage compartment available for essential items. Ingress and egress require some physical agility due to the low-slung bucket seats and side sills, but for owners who accept the compromise of a manual roof operation, it serves as a usable roadster.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 daily usability grading, 58 against 38. Characteristic of the Porsche 911 GT3: Usable daily if you accept its intensity. For the Porsche 718 Spyder RS: Usable but clearly built for spirited driving over commuting. that means 132 litres of boot space against 125.
Ownership: Porsche 911 GT3 vs Porsche 718 Spyder RS
Ownership of the Porsche 911 GT3 is a relatively straightforward affair within the performance car market. The extensive Porsche dealer network provides excellent service coverage, making it easier to maintain than hypercar-level alternatives. Residual values remain exceptionally strong, with demand consistently outstripping supply. Annual maintenance costs are reflective of the performance specification, but parts availability is good. Insurance is manageable for a car of this capability, and the reliability of the naturally aspirated powertrain adds a layer of confidence to the ownership experience. It is a car that makes financial and emotional sense to the dedicated enthusiast.
Ownership of the Porsche 718 Spyder RS is defined by its exclusivity and potential for appreciation. As a model with limited production, it sits in a secure position within the enthusiast market. While annual maintenance costs are high, the support provided by the Porsche Motorsport division offers peace of mind for specialized mechanical needs. Insurance premiums will be substantial, and the high purchase price requires careful consideration, but the prospect of long-term residual strength remains strong. For collectors and enthusiasts alike, it represents a peak of internal combustion performance within the Porsche stable.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 ownership grading, 80 against 78. Characteristic of the Porsche 911 GT3: Strong Porsche reliability and huge collector demand. For the Porsche 718 Spyder RS: Mechanically simple, Porsche-grade reliability. On the wallet the two diverge at £143,000 versus £140,000 — a £3,000 difference, with annual maintenance of £1,500 against £1,400.