BMW X3 vs Mercedes-Benz GLB-Class Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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Specs

Interior
	2025 BMW X3 2.0 20 xDrive M Sport	2026 Mercedes-Benz GLB-Class 1.3 GLB200 AMG Line Executive
Powertrain	8-speed Automatic	7-speed Automatic
Drivetrain	4X4	FWD
Fuel economy, city	--	--
Fuel economy, motorway	--	--
Fuel tank volume	246 L	197 L
Engine
Fuel type	Petrol	Petrol
Power	140 kW	120 kW
Torque	447 N-m @ 4,000 RPM	339 N-m @ 1,620 RPM
Cylinders	4 cylinders	4 cylinders
Engine size	1,998 cc	1,332 cc
Maximum seating	5 seats	7 seats
Front legroom	--	--
Rear legroom	--	--
Exterior
Length	120.78 m	117.7 m
Width	54.15 m	51.31 m
Height	42.16 m	42.98 m
Wheelbase	72.77 m	71.86 m

2025 BMW X3

2.0 20 xDrive M Sport

2026 Mercedes-Benz GLB-Class

1.3 GLB200 AMG Line Executive

2025 BMW X3

2.0 20 xDrive M Sport

2026 Mercedes-Benz GLB-Class

1.3 GLB200 AMG Line Executive