Performance, power and 0-100 km/h
2025 Audi A5 45 TFSI quattro has the quicker recorded 0-100 km/h time at 5.6 seconds, compared with 6.7 seconds for 2024 smart #3 Pro+. 2024 smart #3 Pro+ has the higher listed output at 272 hp; 2025 Audi A5 45 TFSI quattro is rated at 265 hp, a difference of 7 hp. The torque figures follow 2025 Audi A5 45 TFSI quattro at 400 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 Audi A5 45 TFSI quattro provides the larger quoted cargo volume: 450 litres versus 370 litres, a difference of 80 litres. 2025 Audi A5 45 TFSI quattro is 278 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 $48,800 for 2025 Audi A5 45 TFSI quattro. 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.