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 6.7 seconds for 2024 smart #3 Pro+. 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ has the higher listed output at 585 hp; 2024 smart #3 Pro+ is rated at 272 hp, a difference of 313 hp. The torque figures follow 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ at 800 Nm and 2024 smart #3 Pro+ at 343 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
2024 smart #3 Pro+ provides the larger quoted cargo volume: 370 litres versus 294 litres, a difference of 76 litres. 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+ is 325 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
2024 smart #3 Pro+ has the lower listed starting price at $39,990, compared with $162,900 for 2025 Mercedes-Benz AMG GT AMG GT 63 4MATIC+. The measured categories split evenly, so the better choice depends on which attributes matter most. The assessment is based on the specifications shown here; it is not presented as a two-car road test.