Performance, power and 0-100 km/h
2025 BMW M4 Competition has the quicker recorded 0-100 km/h time at 3.9 seconds, compared with 6.7 seconds for 2024 smart #3 Pro+. 2025 BMW M4 Competition has the higher listed output at 503 hp; 2024 smart #3 Pro+ is rated at 272 hp, a difference of 231 hp. The torque figures follow 2025 BMW M4 Competition at 650 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
2025 BMW M4 Competition provides the larger quoted cargo volume: 440 litres versus 370 litres, a difference of 70 litres. 2025 BMW M4 Competition is 394 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 $80,900 for 2025 BMW M4 Competition. 2025 BMW M4 Competition 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.