Performance, power and 0-100 km/h
2026 BMW iX xDrive50 has the quicker recorded 0-100 km/h time at 4.6 seconds, compared with 5.9 seconds for 2025 Mercedes-Benz GLS GLS 450 4MATIC. 2026 BMW iX xDrive50 has the higher listed output at 523 hp; 2025 Mercedes-Benz GLS GLS 450 4MATIC is rated at 362 hp, a difference of 161 hp. The torque figures follow 2026 BMW iX xDrive50 at 765 Nm and 2025 Mercedes-Benz GLS GLS 450 4MATIC at 500 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 Mercedes-Benz GLS GLS 450 4MATIC provides the larger quoted cargo volume: 680 litres versus 500 litres, a difference of 180 litres. 2025 Mercedes-Benz GLS GLS 450 4MATIC carries the higher towing rating at 3,500 kg, while 2026 BMW iX xDrive50 is listed at 2,500 kg. 2025 Mercedes-Benz GLS GLS 450 4MATIC is 254 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
The two entries have the same listed starting price of $88,500. 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.