Mercedes-AMG GT vs Porsche 911 S/T
Compare the Mercedes-AMG GT vs Porsche 911 S/T. The Mercedes-AMG GT is £73,000 cheaper. The Mercedes-AMG GT is 0.6s quicker to 60mph. The Porsche 911 S/T is more fuel efficient. Full performance, cost & ownership breakdown.
The Mercedes-AMG GT is priced from £155,000, powered by a 4.0L Twin-Turbo V8, producing 577 hp, with 800 Nm of torque, reaching 0-60 mph in 3.1s, a top speed of 197 mph, sent to the road via rear-wheel drive. The Porsche 911 S/T is priced from £410,000, powered by a 4.0L Flat-6, producing 525 hp, with 470 Nm of torque, reaching 0-60 mph in 3.7s, a top speed of 186 mph, sent to the road via rear-wheel drive.
The Mercedes-AMG GT offers a 350-litre boot, runs on petrol, returns around 22 mpg, is covered by a 3yr / unlimited mi warranty. The Porsche 911 S/T offers a 100-litre boot, runs on petrol, returns around 22 mpg, is covered by a 4yr / 50k mi warranty.
On cost of ownership, the Mercedes-AMG GT is £73,000 cheaper than its rival, the Mercedes-AMG GT costs less in annual maintenance (£1,600 versus £1,800), a full tank costs around £85 for the Mercedes-AMG GT and £85 for the Porsche 911 S/T.
Driving Character: Mercedes-AMG GT vs Porsche 911 S/T
The Mercedes-AMG GT demonstrates the prowess of a front-mid engine layout, prioritising balance and direct feedback for the enthusiast driver. With 577hp directed to the rear wheels via a mechanical limited-slip differential, the car offers a visceral, involving experience. Steering is sharp and communicative, allowing for precise placement in corner apexes, though the rear-wheel-drive platform demands respect in damp conditions. Acceleration is blistering, with a 3.1-second 0-60mph sprint. While less forgiving than its AWD competitors, the AMG GT rewards committed driving with a dynamic repertoire that remains a benchmark for pure driver engagement within the contemporary supercar class.
The Porsche 911 S/T is a masterstroke of lightweight engineering, stripping away the excesses of modern GT cars to create a pure, analogue experience. With 525 hp from its 4.0L flat-six, it is light, agile, and incredibly communicative. The steering is sharp, providing exceptional feedback that connects the driver directly to the tarmac. While it lacks the aggressive aero package of the GT3 RS, the S/T is far more rewarding on winding roads, where its balance and precision truly shine. It is a visceral, high-revving celebration of everything that makes a 911 special, free from the complexity of electronic interference.
Head-to-head, the division is clear: the Porsche 911 S/T takes our 0-100 driving character grading, 82 against 97. Characteristic of the Mercedes-AMG GT: Thunderous AMG V8 with a more usable, GT-focused character than before. For the Porsche 911 S/T: The lightest, most analogue modern 911 - manual gearbox, GT3 RS engine, no rear-wheel steering. In outright terms it is 577 hp against 525 — a 52 hp gap — and the Mercedes-AMG GT reaches 60 mph 0.6s sooner.
Interior & Cabin: Mercedes-AMG GT vs Porsche 911 S/T
Inside, the AMG GT presents a cockpit-like environment dominated by a high transmission tunnel and a wide, driver-centric dashboard. The interior materials are of a high standard, showcasing bespoke AMG instruments and Alcantara detailing. Space is deliberately intimate, reflecting the car’s focused nature rather than grand touring comfort. Visibility is somewhat compromised by the low-slung roofline and thick pillars, yet the driving position is perfectly aligned with the pedals and steering wheel. It is an environment designed to insulate the driver from distractions, keeping the focus squarely on the task of piloting a high-performance machine through demanding roads.
Inside, the Porsche 911 S/T features a minimalist cockpit that highlights its lightweight mission. The absence of rear seats and the use of carbon-fibre bucket seats with houndstooth cloth create a purposeful, retro-modern atmosphere. Every detail, from the lightweight door pulls to the unique instrument cluster, feels carefully considered to reduce weight without compromising build quality. While it lacks the ultimate comfort features of a base Carrera, the S/T offers a driving environment that is focused solely on the task of performance. It is a stripped-back, high-quality cabin that perfectly mirrors the vehicle's dynamic aspirations.
Head-to-head, the division is clear: the Mercedes-AMG GT takes our 0-100 interior & cabin grading, 84 against 60. Characteristic of the Mercedes-AMG GT: Genuinely usable 2+2 cabin with strong build quality. For the Porsche 911 S/T: Lightweight, motorsport-flavoured cabin with genuine everyday habitability.
Daily Usability: Mercedes-AMG GT vs Porsche 911 S/T
Usability in the AMG GT is naturally restricted by its performance-oriented design. The front trunk provides a 260-litre storage area, adequate for light travel but far from comprehensive for extended road trips. The suspension is remarkably firm even in Comfort mode, which can result in an unsettled ride on poor surfaces or urban speed bumps. Ingress and egress require a degree of physical dexterity, given the low ride height and sculpted seats. While the car can manage city errands, its primary habitat remains the open road where its performance credentials can be exercised without the constraints of suburban infrastructure.
For such a focused sports car, the Porsche 911 S/T is surprisingly usable, thanks in large part to its slightly softer suspension tuning compared to the RS. The narrow body makes it much easier to park and navigate through narrow urban streets than wider, winged models. However, users must remain cautious with ground clearance on steep ramps and driveways. The boot is sufficient for light luggage, provided you aren't planning an extensive road trip. It serves best as a car for the weekend blast or the alpine pass, where its agility and light weight truly excel in practice.
Head-to-head, the division is clear: the Mercedes-AMG GT takes our 0-100 daily usability grading, 72 against 55. Characteristic of the Mercedes-AMG GT: More practical than the previous 2-seat GT thanks to rear seats. For the Porsche 911 S/T: More usable daily than a GT3 RS thanks to the single-mass flywheel manual. that means 350 litres of boot space against 100.
Ownership: Mercedes-AMG GT vs Porsche 911 S/T
Owning an AMG GT is an investment in the traditional, high-performance V8 heritage of the brand. Residual values remain strong, bolstered by consistent demand from enthusiasts who prize the V8 character. Servicing is handled through the robust Mercedes dealer network, ensuring that specialists are always within reach, though owners must prepare for high costs associated with performance-grade brakes and tyres. Annual maintenance of £1,600 is standard for the class. Insurance costs reflect the car’s high performance and the complexity of its mechanical components, yet the model remains a prized inclusion in the garages of those who value pure engagement.
Owning the Porsche 911 S/T is a pinnacle of Porsche ownership, defined by extreme rarity and intense collector interest. The model's historical significance and limited build numbers ensure that residual values remain exceptionally high, far exceeding the original purchase price. While maintenance is handled through the standard Porsche dealer network, the exclusive nature of the S/T means that bespoke parts can be expensive. With a four-year warranty, the ownership experience is as reliable as it is exciting. It is a car that rewards the dedicated enthusiast with both mechanical delight and long-term investment stability.
Head-to-head, the division is clear: the Porsche 911 S/T takes our 0-100 ownership grading, 68 against 82. Characteristic of the Mercedes-AMG GT: Backed by Mercedes-AMG's established V8 reliability record. For the Porsche 911 S/T: Instant collector status as a manual-only, ultra-limited 911. On the wallet the two diverge at £155,000 versus £410,000 — a £255,000 difference, with annual maintenance of £1,600 against £1,800, and warranty cover of 3yr / unlimited mi versus 4yr / 50k mi.