2025 BMW X3 vs 2025 Mercedes-Benz GLB-Class

$49,950 · Crossover

$45,800 · Crossover

Comparison Overview

The most significant numerical divergence between the 2025 BMW X3 and the Mercedes-Benz GLB-Class is the $4,150 difference in starting MSRP, with the GLB-Class priced at $45,800 versus the X3's $49,950. Performance metrics also heavily favor the X3, offering 255 hp and 295 lb-ft of torque compared to the GLB's 221 hp and 258 lb-ft of torque. Fuel economy is tightly matched, with both achieving a 33 MPG highway rating; however, the X3 ekes out a single MPG advantage in combined driving (29 vs. 28). Dimensionally, the X3 is longer by 4.8 inches (187.2 inches), yet the GLB-Class is taller by 1.3 inches. Furthermore, the X3 provides significantly more cargo space at 31.5 cubic feet, substantially exceeding the GLB-Class’s 22.0 cubic feet measurement.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 BMW X3

The 2025 BMW X3 offers superior fuel efficiency with a combined MPG of 29 compared to the GLB-Class's 28 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 BMW X3

The X3 provides 9.5 cubic feet more usable storage, boasting 31.5 cu ft of cargo capacity versus the GLB-Class's 22.0 cu ft.

🏎️ Best for Enthusiasts

2025 BMW X3

The X3 delivers 34 more horsepower and 37 lb-ft more torque, leading to superior acceleration potential.

💰 Best Value

2025 Mercedes-Benz GLB-Class

The Mercedes-Benz GLB-Class achieves its lower MSRP of $45,800 while maintaining comparable premium fuel requirements and nearly equal highway MPG.

Choose the BMW X3 if...

You require the maximum available power, benefiting from 255 hp and 295 lb-ft of torque.
You frequently carry bulky cargo, utilizing the segment-leading 31.5 cu ft of cargo capacity.
You prefer the inherent stability and traction associated with an all-wheel drive configuration.

Choose the Mercedes-Benz GLB-Class if...

A $4,150 initial purchase price reduction is a primary consideration, costing only $45,800.
You prefer a slightly taller vehicle stance, as the GLB-Class sits 1.3 inches higher than the X3.
You prioritize the GLB's smaller exterior footprint, measuring 4.8 inches shorter in length.

Key Dimensions

Dimension	BMW X3	Mercedes-Benz GLB-Class
Length	187.2"	182.4"
Width	75.6"	72.2"
Height	65.4"	66.7"
Wheelbase	112.8"	111.4"

Features Comparison

Safety

Feature	BMW	Mercedes-Benz
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	—
Driver Attention Alert	✓	✓
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
LATCH System	✓	✓
Rear Door Child Safety Locks	✓	✓
Anti-lock Brakes (ABS)	4-Wheel	4-Wheel
Brake Drying	✓	✓
Front Ventilated Disc Brakes	✓	✓
Rear Ventilated Disc Brakes	✓	—
Brake Preparation System	✓	✓
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Height Adjustable Headrests	✓	✓
Rear Headrests	3	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Rear Solid Disc Brakes	—	✓
Front Fog Lights	—	✓

Engine

Feature	BMW	Mercedes-Benz
Base Engine Displacement	2.0 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	mild hybrid	mild hybrid
Horsepower	255 hp @ 4700 rpm	221 hp @ 5500 rpm
Torque	295 lb-ft @ 1600 rpm	258 lb-ft @ 1800 rpm
Number of Valves	16	16
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	BMW	Mercedes-Benz
Transmission Type	8-speed shiftable automatic	8-speed automated manual
Drivetrain Type	all wheel drive	front wheel drive
Center Differential Type	Limited Slip	—
Hill Descent Control	✓	—

Fuel

Feature	BMW	Mercedes-Benz
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	27/33 MPG	25/33 MPG
EPA Fuel Economy (Combined)	29 MPG	28 MPG
EPA Driving Range (City/Highway)	464.4/567.6 mi.	397.5/524.7 mi.
Fuel Tank Capacity	17.2 gal.	15.9 gal.

Comfort & Convenience

Feature	BMW	Mercedes-Benz
Push Button Start	✓	✓
Tilt and Telescopic Steering Wheel	✓	✓
Transmission Controls on Steering Wheel	✓	✓
Cruise Control on Steering Wheel	✓	✓
Audio Controls on Steering Wheel	✓	✓
Electric Power Steering	✓	✓
Rear View Camera	✓	✓
Cruise Control	✓	✓
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Dual Zone Climate Control	✓	✓
Rear Ventilation Ducts	✓	✓
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Front Parking Sensors	—	✓
Rear Parking Sensors	—	✓
Driver Assisted Parking Assist	—	✓
Wireless Charging Pad	—	✓
Overhead Console with Storage	—	✓
Leather Steering Wheel	—	✓
Auto-Dimming Rearview Mirror	—	✓

In Car Entertainment

Feature	BMW	Mercedes-Benz
Infotainment Display	14.9 in	10.25 in
AM/FM Stereo	✓	✓
Android Auto (Wired)	✓	—
Apple CarPlay (Wired)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	12 months	6 months
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓

Power Feature

Feature	BMW	Mercedes-Benz
One-Touch Power Windows	4	4
Keyless Entry	✓	✓
Heated Mirrors	✓	✓

Frontseats

Feature	BMW	Mercedes-Benz
Front Leg Room	40.2 in.	41.1 in.
Front Shoulder Room	57.9 in.	55.9 in.
Seat Material: Leatherette	✓	✓
Front Seat Type: Sport	✓	—
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	2	3
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Front Head Room	—	40.7 in.
Front Seat Type: Bucket	—	✓
Driver Seat Power Adjustments	—	8-way
Driver Seat Thigh Extension	—	✓
Passenger Seat Power Adjustments	—	8-way
Passenger Seat Thigh Extension	—	✓
Passenger Seat Memory Settings	—	3

Rearseats

Feature	BMW	Mercedes-Benz
Rear Leg Room	36.3 in.	38.1 in.
Rear Shoulder Room	55.7 in.	54.9 in.
Split-Folding Rear Seatback	✓	✓
Folding Center Armrest	✓	✓
Rear Head Room	—	39.3 in.
Reclining Rear Seats	—	✓

Tires and Wheels

Feature	BMW	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	19 x 8.5 in	18 x 7.5 in
Tire Type	All Season	—
Tire Size	✓	235/55R18
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Material	—	Alloy
Run Flat Tires	—	✓

Suspension

Feature	BMW	Mercedes-Benz
Four-Wheel Independent Suspension	✓	✓
Front Stabilizer Bar	✓	✓
Rear Stabilizer Bar	✓	✓

Warranty

Feature	BMW	Mercedes-Benz
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	12 yr./ unlimited mi.	4 yr./ 50000 mi.
Roadside Assistance	4 yr./ unlimited mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	—

Frequently Asked Questions

Common questions about comparing the 2025 BMW X3 and 2025 Mercedes-Benz GLB-Class.

What is the primary mechanical difference between the powertrains?

The 2025 BMW X3 is equipped with a more powerful 255 hp engine delivering 295 lb-ft of torque, while the 2025 Mercedes-Benz GLB-Class produces 221 hp and 258 lb-ft of torque. Additionally, the X3 uses an 8-speed shiftable automatic, whereas the GLB uses an 8-speed automated manual transmission.

How does cargo space compare for utility purposes?

The BMW X3 offers substantially more cargo capacity at 31.5 cubic feet when comparing the standard measurement against the Mercedes-Benz GLB-Class's 22.0 cubic feet. This represents a difference of 9.5 cubic feet in favor of the X3.

Are the fuel requirements similar for these luxury crossovers?

Yes, both the 2025 BMW X3 and the 2025 Mercedes-Benz GLB-Class mandate the use of premium unleaded fuel for optimal performance and efficiency.

Which vehicle has a standard all-wheel drive system?

The 2025 BMW X3 comes standard with an all-wheel drive system. Conversely, the 2025 Mercedes-Benz GLB-Class is specified with a front-wheel drive setup in its base configuration.

What is the impact of the size difference on the driving experience?

The X3 is longer (187.2 inches) and wider (75.6 inches), suggesting a larger cabin and greater road presence. The GLB-Class is significantly shorter at 182.4 inches, which might aid maneuverability in tight urban settings, despite being 1.3 inches taller.