Performance, power and 0-100 km/h
2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ has the quicker recorded 0-100 km/h time at 3.2 seconds, compared with 4.5 seconds for 2026 Rolls-Royce Spectre. 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ has the higher listed output at 585 hp; 2026 Rolls-Royce Spectre is rated at 584 hp, a difference of 1 hp. The torque figures follow 2026 Rolls-Royce Spectre at 900 Nm and 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ at 800 Nm. These figures describe straight-line potential only; they do not establish braking performance, ride quality, steering response or durability under repeated hard use.
Range, battery, charging and efficiency
Range and energy-use figures are either not shared by both cars or not directly comparable across these powertrain types.
Dimensions, cargo space and towing
2026 Rolls-Royce Spectre provides the larger quoted cargo volume: 500 litres versus 294 litres, a difference of 206 litres. 2026 Rolls-Royce Spectre is 750 mm longer overall. Exterior size is not a benefit by itself: a longer body may create useful room, but cargo shape, rear-seat space and ease of parking still require a physical inspection.
Price and overall assessment
2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ has the lower listed starting price at $162,900, compared with $420,000 for 2026 Rolls-Royce Spectre. 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ leads in more of the shared headline fields, but that is not a universal verdict: a buyer should weight price, performance, range and utility rather than simply count category wins. The assessment is based on the specifications shown here; it is not presented as a two-car road test.