Mercedes-AMG ONE vs Porsche 918 Spyder
Compare the Mercedes-AMG ONE vs Porsche 918 Spyder. The Porsche 918 Spyder is £1,620,000 cheaper. The Porsche 918 Spyder is 0.3s quicker to 60mph. The Porsche 918 Spyder is more fuel efficient. Full performance, cost & ownership breakdown.
The Mercedes-AMG ONE is priced from £3,500,000, powered by a 1.6L V6 Hybrid, producing 1049 hp, with Not applicable (combined rating not defined) of torque, reaching 0-62 mph in 2.9 s, a top speed of 219 mph, sent to the road via all-wheel drive. The Porsche 918 Spyder is priced from £1,400,000, powered by a 4.6L V8 Hybrid, producing 875 hp (887 PS system), with 1280 Nm of torque, reaching 0-62 mph in 2.6 s, a top speed of 214 mph, sent to the road via all-wheel drive.
The Mercedes-AMG ONE offers a 0-litre boot, runs on petrol hybrid, returns around 45 mpg, is covered by a 2yr / unlimited mi warranty. The Porsche 918 Spyder offers a 110-litre boot, a usable front boot, runs on petrol hybrid, returns around 94 mpg, is covered by a 2yr / unlimited mi warranty.
On cost of ownership, the Porsche 918 Spyder is £1,620,000 cheaper than its rival, the Porsche 918 Spyder costs less in annual maintenance (£8,000 versus £4,000), the Porsche 918 Spyder is the more fuel-efficient choice, the Mercedes-AMG ONE has 55 L fuel tank.
Driving Character: Mercedes-AMG ONE vs Porsche 918 Spyder
The Mercedes-AMG ONE is a staggering achievement, packing a 1049 hp hybrid V6 directly descended from Formula One. It pulls with relentless intensity, climbing to a dizzying 11,000rpm redline that makes every other road car feel pedestrian. With all-wheel drive and active aero, it provides grip levels that defy physics, yet the chassis is complex and demanding, requiring a bespoke, F1-inspired suspension setup to manage its immense power. It is not built for comfort; this is a track-focused machine where every component serves the pursuit of raw, unadulterated speed.
The Porsche 918 Spyder is a technological tour de force, pairing a high-revving 4.6L V8 with two electric motors for seamless, instant torque. Its AWD system and torque vectoring allow for incredible corner exit speeds, while top-exit exhausts facilitate unique aerodynamic efficiency. However, the complex hybrid system adds significant kerb weight, and the car's personality shifts dramatically between its various driving modes, requiring constant recalibration from the driver.
Head-to-head, the division is clear: the Mercedes-AMG ONE — F1-derived 1.6L V6 hybrid; 1,049hp with race-car-derived downforce on road; the Porsche 918 Spyder — 4.6L V8 hybrid; AWD traction ensures stunning 2.5s acceleration in all weather conditions. Characteristic of the Mercedes-AMG ONE: Active aerodynamics with DRS-equivalent on the road; unique in production. For the Porsche 918 Spyder: Chassis precision; active torque vectoring enhances stability during high-speed directional changes. In outright terms it is 1049 hp against 875 — a 174 hp gap — and the Porsche 918 Spyder reaches 60 mph 0.3s sooner.
Interior & Cabin: Mercedes-AMG ONE vs Porsche 918 Spyder
Stepping into the Mercedes-AMG ONE requires a level of agility that mirrors its performance. The cabin is an impossibly compact space, heavily influenced by its racing bloodline, featuring carbon fibre and Alcantara at every turn. Bespoke AMG detailing separates it from any standard luxury vehicle, with focused digital displays providing all necessary telemetry. Ergonomics are entirely dedicated to the pilot, prioritising the driving position above all else. While the build quality is superlative, the interior prioritises function over features, maintaining a minimalist, performance-oriented aesthetic that emphasises the car's singular purpose.
Inside, the cockpit is defined by a minimalist, floating dashboard layout that prioritises focus over opulence. The Weissach package enhances the experience by integrating carbon fibre elements and lightweight magnesium wheels. Despite the high-tech interior, the cabin remains tight, featuring fixed-back bucket seats that offer minimal adjustment, making it less comfortable for long-duration drives than traditional grand tourers.
Head-to-head, the division is clear: the Mercedes-AMG ONE — Track-derived ergonomics with some GT-level comfort inclusions; the Porsche 918 Spyder — Premium cockpit ergonomics; technology is well integrated into the driver-centric centre console. Characteristic of the Mercedes-AMG ONE: Custom HMI and instrumentation; the most technically advanced AMG interior. For the Porsche 918 Spyder: High-quality bespoke materials; interior balances luxury feel with necessary performance weight saving.
Daily Usability: Mercedes-AMG ONE vs Porsche 918 Spyder
Utility is not a concept the Mercedes-AMG ONE recognises, as it offers virtually no luggage space for the driver or passenger. While the car features an EV-only mode that allows for quiet urban transit, it remains a difficult vehicle to navigate in everyday environments. The standard nose lift is an essential feature, preventing the aggressive splitter from fouling on mundane driveways. While the car is surprisingly manageable during low-speed manoeuvres, it is strictly an exotic machine designed for special occasions, never for the rigours of the daily grind.
Thanks to its dedicated EV-only mode, the 918 Spyder allows for surprisingly civilised, silent urban transit. It is arguably more practical than its direct hypercar rivals, boasting a useful front trunk for small items. Nevertheless, the exceptionally low ride height and substantial width make navigating speed bumps and multi-storey car parks a cautious endeavour, requiring significant driver awareness in everyday environments.
Head-to-head, the division is clear: the Mercedes-AMG ONE — EV-only mode for low-speed city running on hybrid system; the Porsche 918 Spyder — Hybrid efficiency; provides a clean, refined driving experience for urban traffic environments. Characteristic of the Mercedes-AMG ONE: More usable than early versions indicated; AMG refined over development. For the Porsche 918 Spyder: 100mm ground clearance; manageable for most public roads if driven with awareness. that means 0 litres of boot space against 110, plus a usable front boot in the Porsche 918 Spyder, and everyday running costs that favour the Porsche 918 Spyder at the pumps.
Ownership: Mercedes-AMG ONE vs Porsche 918 Spyder
Ownership of the Mercedes-AMG ONE is an exclusive privilege limited to 275 individuals. The reliance on a highly tuned F1 engine brings unique logistical demands, specifically the need for an engine rebuild every 50,000km, which carries an immense cost. Mercedes-AMG provides a dedicated team of specialists to support these vehicles, ensuring the level of maintenance matches the car's extreme engineering. Given the limited production run and the sheer technical audacity of the project, residual values remain stratospheric, cementing the car's status as a crown jewel in any serious collector's garage.
As a collector-grade investment, the 918 Spyder has seen values appreciate significantly since its departure from production. Porsche provides comprehensive factory support for its hybrid technology, including a robust battery service guarantee. However, ownership costs remain substantial; the technical complexity of the hybrid system mandates specialist intervention, and eventual battery replacement represents a major financial consideration for long-term custodians.
Head-to-head, the division is clear: the Mercedes-AMG ONE — Limited to 275 units; among the most significant AMG products ever built; the Porsche 918 Spyder — High investment desirability; limited production numbers maintain strong long-term market value. Characteristic of the Mercedes-AMG ONE: Mercedes Benz Manufaktur provides dedicated AMG ONE ownership support. For the Porsche 918 Spyder: Advanced Porsche engineering; reliability is superior to most traditional high-performance rivals. On the wallet the two diverge at £3,500,000 versus £1,400,000 — a £2,100,000 difference, with annual maintenance of £8,000 against £4,000.