Mercedes-AMG GT vs Mercedes-AMG SL 63
Compare the Mercedes-AMG GT vs Mercedes-AMG SL 63. The Mercedes-AMG GT is £10,000 cheaper. The Mercedes-AMG GT is 0.4s quicker to 60mph. The Mercedes-AMG SL 63 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 Mercedes-AMG SL 63 is priced from £165,000, powered by a 4.0L Twin-Turbo V8, producing 577 hp, with 800 Nm of torque, reaching 0-60 mph in 3.5s, a top speed of 196 mph, sent to the road via all-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 Mercedes-AMG SL 63 offers a 213-litre boot, runs on petrol, returns around 24 mpg, is covered by a 3yr / unlimited mi warranty.
On cost of ownership, the Mercedes-AMG GT is £10,000 cheaper than its rival, the Mercedes-AMG SL 63 costs less in annual maintenance (£1,600 versus £1,500), the Mercedes-AMG SL 63 is the more fuel-efficient choice, a full tank costs around £85 for the Mercedes-AMG GT and £90 for the Mercedes-AMG SL 63.
Driving Character: Mercedes-AMG GT vs Mercedes-AMG SL 63
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 Mercedes-AMG SL 63 transitions the lineage toward a sophisticated grand tourer profile, prioritising compliance over the surgical precision of its predecessor. The 4.0-litre twin-turbo V8 delivers a relentless surge of torque, managed by an all-wheel-drive system that ensures composure in challenging UK conditions. While the AMG Active Ride Control suspension offers remarkable poise for a heavy convertible, the steering feel remains somewhat insulated compared to pure sports cars. It excels as a high-speed cruiser rather than a track-day weapon, favouring long-distance refinement and effortless pace over the frantic, razor-sharp feedback once associated with the AMG brand.
Head-to-head, the division is clear: the Mercedes-AMG GT takes our 0-100 driving character grading, 82 against 78. Characteristic of the Mercedes-AMG GT: Thunderous AMG V8 with a more usable, GT-focused character than before. For the Mercedes-AMG SL 63: Composed, quattro-like AWD grip with genuine open-top GT character. In outright terms it is 577 hp against 577 — a 0 hp gap — and the Mercedes-AMG GT reaches 60 mph 0.4s sooner.
Interior & Cabin: Mercedes-AMG GT vs Mercedes-AMG SL 63
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 SL 63 feels thoroughly modern, dominated by a portrait-oriented MUX interface that dictates the cabin aesthetic. The digital cockpit is crisp, though the heavy reliance on touch-sensitive surfaces can feel counterintuitive when pressing on. Material quality is excellent, with high-grade leathers and metals, yet the ergonomics are compromised by the vestigial rear seats, which serve more as shelf space than viable seating. It lacks the intimate, driver-focused cocoon of the previous AMG GT, opting instead for a broad, open-air cockpit design that prioritises perceived luxury and connectivity over raw, tactile immersion.
Head-to-head, the division is clear: the Mercedes-AMG SL 63 takes our 0-100 interior & cabin grading, 84 against 85. Characteristic of the Mercedes-AMG GT: Genuinely usable 2+2 cabin with strong build quality. For the Mercedes-AMG SL 63: Luxurious, modern cabin with excellent build quality.
Daily Usability: Mercedes-AMG GT vs Mercedes-AMG SL 63
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.
Daily utility is remarkably improved, largely due to the transition to a fully variable fabric roof that saves significant boot space and lowers the centre of gravity. The 213-litre capacity remains tight, though it accommodates soft luggage better than the old hard-top systems. Parking remains a chore; the wide, low-slung bodywork requires cautious navigation through tight urban gaps, and the extensive bonnet length demands foresight. Nevertheless, the sophisticated suspension tuning allows it to soak up poorly maintained road surfaces with grace, making it a viable, albeit thirsty, companion for regular motorway commutes and long-distance touring.
Head-to-head, the division is clear: the Mercedes-AMG GT takes our 0-100 daily usability grading, 72 against 68. Characteristic of the Mercedes-AMG GT: More practical than the previous 2-seat GT thanks to rear seats. For the Mercedes-AMG SL 63: Comfortable, capable long-distance convertible for daily use. that means 350 litres of boot space against 213, and everyday running costs that favour the Mercedes-AMG SL 63 at the pumps.
Ownership: Mercedes-AMG GT vs Mercedes-AMG SL 63
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.
Ownership is bolstered by the vast, well-integrated Mercedes-Benz dealer network, which provides consistent support for the complex AMG powertrain. Maintenance costs are steep, with annual services reflecting the performance-oriented nature of the twin-turbo V8, and the intricate soft-top mechanism introduces a long-term servicing variable that owners must anticipate. While depreciation is generally mitigated by the enduring prestige of the SL moniker, the market is competitive. Reliability is generally predictable, provided the rigid servicing intervals are respected, ensuring the complex electronics and drivetrain remain within optimal operating parameters throughout the ownership period.
Head-to-head, the division is clear: the Mercedes-AMG GT takes our 0-100 ownership grading, 68 against 68. Characteristic of the Mercedes-AMG GT: Backed by Mercedes-AMG's established V8 reliability record. For the Mercedes-AMG SL 63: Backed by Mercedes-AMG's established reliability record. On the wallet the two diverge at £155,000 versus £165,000 — a £10,000 difference, with annual maintenance of £1,600 against £1,500.