Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren
Compare the Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren. The Porsche 718 Spyder RS is £220,000 cheaper. The Porsche 718 Spyder RS is 0.4s quicker to 60mph. The Porsche 718 Spyder RS is more fuel efficient. Full performance, cost & ownership breakdown.
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 Mercedes-Benz SLR McLaren is priced from £350,000, powered by a 5.4L Supercharged V8, producing 617 hp, with 780 Nm of torque, reaching 0-60 mph in 3.8s, a top speed of 207 mph, sent to the road via rear-wheel drive.
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. The Mercedes-Benz SLR McLaren offers a 272-litre boot, runs on petrol, returns around 14 mpg, is covered by a 2yr / unlimited mi warranty.
On cost of ownership, the Porsche 718 Spyder RS is £220,000 cheaper than its rival, the Porsche 718 Spyder RS costs less in annual maintenance (£1,400 versus £5,000), the Porsche 718 Spyder RS is the more fuel-efficient choice, a full tank costs around £70 for the Porsche 718 Spyder RS and £95 for the Mercedes-Benz SLR McLaren.
Driving Character: Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren
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.
The Mercedes-Benz SLR McLaren is a brutal manifestation of early 2000s super-GT excess, defined by a hand-built 5.4-litre supercharged V8 that delivers 617hp with unrelenting force. Its long-bonnet, front-mid engine layout dictates a heavy, rear-biased handling balance, accompanied by the visceral, side-exit exhaust note. While capable of prodigious speeds, it does not possess the agility of modern mid-engined peers. The steering is direct but weighty, and the overall driving experience is characterised by theatrical, high-speed stability rather than delicate cornering precision, requiring a firm hand to manage the immense torque and significant kerb weight.
Head-to-head, the division is clear: the Porsche 718 Spyder RS takes our 0-100 driving character grading, 94 against 78. Characteristic of the Porsche 718 Spyder RS: GT4 RS power in an open-top body - visceral and track-honed. For the Mercedes-Benz SLR McLaren: Dramatic, supercharged V8 GT with genuine McLaren engineering input. In outright terms it is 493 hp against 617 — a 124 hp gap — and the Porsche 718 Spyder RS reaches 60 mph 0.4s sooner.
Interior & Cabin: Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren
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.
The interior represents a peculiar blend of McLaren-derived carbon fibre construction and Mercedes-Benz switchgear, resulting in a cabin that feels both bespoke and familiar. The butterfly doors provide an unparalleled sense of arrival, though the low-slung, cramped cabin makes ingress a deliberate process. Once inside, the driver is met with premium MB-Tex and structural carbon, though the infotainment and navigation systems are clearly relics of their era. Despite this, the hand-finished quality remains high, offering a uniquely dramatic environment that prioritises sensory impact over the ergonomic cleanliness expected in contemporary performance vehicles.
Head-to-head, the division is clear: the Mercedes-Benz SLR McLaren takes our 0-100 interior & cabin grading, 52 against 75. Characteristic of the Porsche 718 Spyder RS: Stripped-back, motorsport-focused cockpit. For the Mercedes-Benz SLR McLaren: Luxurious, distinctive cabin with genuine period-correct drama.
Daily Usability: Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren
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.
Daily utility is surprisingly coherent for a vehicle of this performance class, thanks to the front-mid engine configuration that allows for a functional 272-litre boot. It functions comfortably as a grand tourer, with an engine delivery that is better suited to long-distance speed than dense urban environments. The significant length and wide stance, however, render it problematic in tight parking conditions. Furthermore, the heat generated by the side-exit exhausts near the doors requires awareness during ingress and egress, a small inconvenience given the car's primary focus on highway dominance and long-legged cruising capability.
Head-to-head, the division is clear: the Mercedes-Benz SLR McLaren takes our 0-100 daily usability grading, 38 against 50. Characteristic of the Porsche 718 Spyder RS: Usable but clearly built for spirited driving over commuting. For the Mercedes-Benz SLR McLaren: Usable GT for longer journeys, if firmly sprung. that means 125 litres of boot space against 272, plus a usable front boot in the Porsche 718 Spyder RS, and everyday running costs that favour the Porsche 718 Spyder RS at the pumps.
Ownership: Porsche 718 Spyder RS vs Mercedes-Benz SLR McLaren
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.
Owning a Mercedes-Benz SLR McLaren is a commitment to maintaining an iconic, low-volume collaboration. With values now firmly in the appreciation phase, finding specialists who can source bespoke components is essential. Both Mercedes and McLaren offer support programmes, but servicing costs are astronomical, reflecting the specialised labour required for the supercharged V8 and intricate aero-components. While the rarity of the model ensures significant appeal to collectors, the maintenance overheads are not for the faint-hearted, making it an investment-grade machine that demands a dedicated, well-funded approach to long-term stewardship.
Head-to-head, the division is clear: the Porsche 718 Spyder RS takes our 0-100 ownership grading, 78 against 60. Characteristic of the Porsche 718 Spyder RS: Mechanically simple, Porsche-grade reliability. For the Mercedes-Benz SLR McLaren: Now a sought-after modern classic collaboration between Mercedes and McLaren. On the wallet the two diverge at £140,000 versus £350,000 — a £210,000 difference, with annual maintenance of £1,400 against £5,000, and warranty cover of 4yr / 50k mi versus 2yr / unlimited mi.