Porsche 718 Spyder vs Mercedes-AMG C 63
Compare the Porsche 718 Spyder vs Mercedes-AMG C 63. The Porsche 718 Spyder is £6,000 cheaper. The Mercedes-AMG C 63 is 0.2s quicker to 60mph. The Mercedes-AMG C 63 is more fuel efficient. Full performance, cost & ownership breakdown.
The Porsche 718 Spyder is priced from £80,000, powered by a 4.0L Flat-6, producing 414 hp, with 420 Nm of torque, reaching 0-60 mph in 4s, a top speed of 187 mph, sent to the road via rear-wheel drive. The Mercedes-AMG C 63 is priced from £55,000, powered by a 4.0L Twin-Turbo V8, producing 503 hp, with 700 Nm of torque, reaching 0-60 mph in 3.8s, a top speed of 180 mph, sent to the road via rear-wheel drive.
The Porsche 718 Spyder offers a 150-litre boot, a usable front boot, runs on petrol, returns around 25 mpg, is covered by a 4yr / 50k mi warranty. The Mercedes-AMG C 63 offers a 455-litre boot, folding rear seats, runs on petrol, returns around 26 mpg, is covered by a 3yr / unlimited mi warranty.
On cost of ownership, the Porsche 718 Spyder is £6,000 cheaper than its rival, the Mercedes-AMG C 63 costs less in annual maintenance (£1,200 versus £1,100), the Mercedes-AMG C 63 is the more fuel-efficient choice, a full tank costs around £70 for the Porsche 718 Spyder and £80 for the Mercedes-AMG C 63.
Driving Character: Porsche 718 Spyder vs Mercedes-AMG C 63
The Porsche 718 Spyder offers a purist’s approach to roadster dynamics, retaining the naturally aspirated 4.0-litre flat-six and a manual gearbox for maximum engagement. The mid-engine layout provides exceptional balance, allowing the driver to feel every nuance through the steering wheel. Its handling is defined by a lightness of touch that differentiates it from the heavier convertible segments, making it exceptionally agile on winding backroads. While it shares much with the GT4, the open-top configuration adds an extra layer of sensory connection, making it an incredibly visceral and rewarding machine for the true enthusiast.
The Mercedes-AMG C 63 remains a titan of the executive performance segment, defined by its thunderous 4.0L twin-turbo V8. The engine delivers a character that is increasingly rare, offering an aggressive, theatrical soundscape that is amplified by the mechanical limited-slip differential. The rear-wheel-drive platform provides a traditional, tail-happy balance that rewards a skilled driver, though the sheer power output requires significant caution in adverse weather conditions. It is a car that thrives on the open road, where the balance of torque and power delivery can be fully exploited, making it a visceral, highly engaging piece of German engineering.
Head-to-head, the division is clear: the Porsche 718 Spyder takes our 0-100 driving character grading, 88 against 84. Characteristic of the Porsche 718 Spyder: Naturally-aspirated flat-six purity in an open-top mid-engined chassis. For the Mercedes-AMG C 63: Thunderous twin-turbo V8 with a playful, adjustable rear-drive character. In outright terms it is 414 hp against 503 — a 89 hp gap — and the Mercedes-AMG C 63 reaches 60 mph 0.2s sooner.
Interior & Cabin: Porsche 718 Spyder vs Mercedes-AMG C 63
The cabin remains strictly driver-focused, with Alcantara accents on the contact points and a simplified dashboard layout that emphasises function over technology. Lightweight door pulls and minimal luxuries maintain the stripped-back, enthusiast spirit of the Spyder. Because of the manual roof mechanism, interior storage is at a premium, and the cabin environment can be quite noisy when the top is up. The seats are excellent for long-distance support, but the overall feeling is one of purposeful simplicity, catering to those who prefer the tactile interaction of a pure sports car over digital sophistication.
Inside, the C 63 is a blend of high-end executive luxury and focused performance. The cabin features premium Nappa leather and DINAMICA materials, with AMG-specific detailing that differentiates it from the standard C-Class. The Performance seats provide excellent support during spirited driving while remaining comfortable for daily commuting. Infotainment is delivered through a high-resolution interface that is ergonomic and well-integrated. While the rear seats offer adequate space for adults, the overall interior environment feels sophisticated, maintaining a luxurious ambience that balances the car's extreme performance capabilities with the comfort expected of a premium Mercedes saloon.
Head-to-head, the division is clear: the Mercedes-AMG C 63 takes our 0-100 interior & cabin grading, 62 against 76. Characteristic of the Porsche 718 Spyder: Motorsport-flavoured cabin with genuine everyday livability. For the Mercedes-AMG C 63: Flamboyant, premium-feeling cabin with supportive seats.
Daily Usability: Porsche 718 Spyder vs Mercedes-AMG C 63
As the lightest member of the 718 family, the Spyder is remarkably nimble in urban settings, though the manual roof operation requires significant effort and patience compared to power-operated rivals. The dual trunks—front and rear—provide decent storage for a weekend getaway, which remains its primary use case. The ride is firm, though manageable, and it lacks the daily convenience of power-folding roof mechanisms, reinforcing its role as a machine to be driven intentionally. It is not an ideal city car, but for the enthusiast driver, it offers the perfect balance of roadster freedom and mid-engine practicality.
Practicality is a cornerstone of the C 63's appeal, offering a 455-litre boot that handles everyday chores with ease. In Comfort mode, the suspension softens significantly, turning the car into a compliant cruiser capable of managing motorway miles without fatigue. It is a vehicle that transitions effortlessly from a daily office commuter to a weekend sports machine. The only real trade-off for this usability is the fuel consumption, which is significant under load, and the wide wheel arches and stance that can make navigating tight city streets or multi-storey car parks an exercise in careful spatial awareness.
Head-to-head, the division is clear: the Mercedes-AMG C 63 takes our 0-100 daily usability grading, 65 against 70. Characteristic of the Porsche 718 Spyder: Surprisingly civil for an open-top track-focused Porsche. For the Mercedes-AMG C 63: Comfortable, well-isolated cruiser despite its firm setup. that means 150 litres of boot space against 455, plus a usable front boot in the Porsche 718 Spyder, and everyday running costs that favour the Mercedes-AMG C 63 at the pumps.
Ownership: Porsche 718 Spyder vs Mercedes-AMG C 63
As the final naturally aspirated flat-six Boxster variant, the 718 Spyder holds a special place in the Porsche hierarchy, which has helped sustain strong residual values. Ownership is backed by the comprehensive Porsche dealer network, ensuring that maintenance is straightforward and well-documented. Parts and support for the 718 platform remain easy to obtain, though the limited production run means that Spyder-specific aesthetic components may become increasingly difficult to replace over time. It is a reliable, high-value ownership proposition that rewards careful maintenance and consistent usage throughout the warmer months of the year.
Owning a C 63 is a relatively straightforward experience, thanks to the vast global Mercedes dealer network and the availability of specialist support. Maintenance is predictably expensive, with high-performance components like tyres and brakes requiring frequent attention, but the overall reliability of the powertrain is well-regarded among the community. As the industry moves toward electrification, the W205 C 63's naturally aspirated-feel V8 is increasingly seen as a desirable classic, helping to stabilise residual values. It remains a benchmark for the segment, offering a combination of daily utility and performance that continues to attract a strong, loyal owner base.
Head-to-head, the division is clear: the Porsche 718 Spyder takes our 0-100 ownership grading, 78 against 66. Characteristic of the Porsche 718 Spyder: Mechanically simple, Porsche-grade reliability. For the Mercedes-AMG C 63: Feels robustly screwed together. On the wallet the two diverge at £80,000 versus £55,000 — a £25,000 difference, with annual maintenance of £1,200 against £1,100, and warranty cover of 4yr / 50k mi versus 3yr / unlimited mi.