Performance, power and 0-100 km/h
2026 BMW X3 M50 xDrive has the quicker recorded 0-100 km/h time at 4.6 seconds, compared with 6.7 seconds for 2025 Mercedes-Benz GLA 250 4MATIC. 2026 BMW X3 M50 xDrive has the higher listed output at 398 hp; 2025 Mercedes-Benz GLA 250 4MATIC is rated at 221 hp, a difference of 177 hp. The torque figures follow 2026 BMW X3 M50 xDrive at 580 Nm and 2025 Mercedes-Benz GLA 250 4MATIC at 350 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 BMW X3 M50 xDrive provides the larger quoted cargo volume: 570 litres versus 435 litres, a difference of 135 litres. 2026 BMW X3 M50 xDrive carries the higher towing rating at 2,400 kg, while 2025 Mercedes-Benz GLA 250 4MATIC is listed at 1,800 kg. 2026 BMW X3 M50 xDrive is 345 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 GLA 250 4MATIC has the lower listed starting price at $42,050, compared with $63,500 for 2026 BMW X3 M50 xDrive. 2026 BMW X3 M50 xDrive 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.