2025 Mercedes-Benz GLB-Class vs 2026 Lexus RX

$45,800 · Crossover

$49,725 · Crossover

Comparison Overview

The most significant numerical difference between the 2025 Mercedes-Benz GLB-Class (car1) and the 2026 Lexus RX (car2) is the 54 horsepower advantage held by the Lexus, offering 275 hp compared to the GLB's 221 hp. This power disparity is coupled with a $3,925 higher MSRP for the RX at $49,725 versus the GLB's $45,800 entry price. Conversely, the GLB offers superior fuel efficiency, achieving 28 combined MPG versus the RX's 25 combined MPG, despite requiring premium fuel mandated for both. The RX also leads significantly in utility, boasting 29.6 cu ft of cargo capacity compared to the GLB's 22 cu ft, though the GLB is shorter by over 10 inches (182.4 vs 192.5 inches). Enthusiasts seeking immediate response might prefer the RX’s 317 lb-ft of torque, while value buyers will note the GLB’s lower initial outlay.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Mercedes-Benz GLB-Class

The GLB-Class wins for commuters due to its superior fuel economy rating of 28 combined MPG versus the RX's 25 combined MPG.

👨‍👩‍👧‍👦 Best for Families

2026 Lexus RX

The 2026 Lexus RX is better suited for families because it offers substantially more cargo space at 29.6 cu ft compared to the GLB's 22 cu ft.

🏎️ Best for Enthusiasts

2026 Lexus RX

The 2026 Lexus RX appeals more to driving enthusiasts by providing 275 horsepower and 317 lb-ft of torque, significantly outgunning the GLB's 221 hp and 258 lb-ft.

💰 Best Value

2025 Mercedes-Benz GLB-Class

The Mercedes-Benz GLB-Class presents a better initial value proposition, starting at $45,800 against the RX's $49,725 MSRP.

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

Your primary concern is minimizing stops at the pump, as the GLB achieves 28 combined MPG versus 25 MPG for the RX.
You prioritize a lower entry cost, with the GLB starting $3,925 less expensive than the 2026 RX.
You prefer a slightly more compact exterior, as the GLB is 182.4 inches long compared to the RX’s 192.5 inches.

Choose the Lexus RX if...

You require maximum storage, as the RX delivers 29.6 cu ft of cargo volume, exceeding the GLB's 22 cu ft.
You desire higher performance figures, evidenced by the RX’s 275 hp and 317 lb-ft of torque.
You prefer a traditional automatic transmission (shiftable automatic) over the GLB's 8-speed automated manual.

Key Dimensions

Dimension	Mercedes-Benz GLB-Class	Lexus RX
Length	182.4"	192.5"
Width	72.2"	75.6"
Height	66.7"	67.3"
Wheelbase	111.4"	112.2"

Features Comparison

Safety

Feature	Mercedes-Benz	Lexus
Blind Spot Monitor	✓	✓
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 Solid Disc Brakes	✓	—
Brake Preparation System	✓	—
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Front Fog 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	✓	✓
Lane Departure Warning	—	✓
Lane Keeping Assist System	—	✓
Rear Cross Traffic Alert	—	✓
Dual Rear Side-Mounted Airbags	—	✓
Rear Ventilated Disc Brakes	—	✓

Engine

Feature	Mercedes-Benz	Lexus
Base Engine Displacement	2.0 L	2.4 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	mild hybrid	gas
Horsepower	221 hp @ 5500 rpm	275 hp @ 6000 rpm
Torque	258 lb-ft @ 1800 rpm	317 lb-ft @ 1700 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	Mercedes-Benz	Lexus
Transmission Type	8-speed automated manual	8-speed shiftable automatic
Drivetrain Type	front wheel drive	front wheel drive

Fuel

Feature	Mercedes-Benz	Lexus
Fuel Type	premium unleaded (required)	premium unleaded (recommended)
EPA Fuel Economy (City/Highway)	25/33 MPG	22/29 MPG
EPA Fuel Economy (Combined)	28 MPG	25 MPG
EPA Driving Range (City/Highway)	397.5/524.7 mi.	391.6/516.2 mi.
Fuel Tank Capacity	15.9 gal.	17.8 gal.

Comfort & Convenience

Feature	Mercedes-Benz	Lexus
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	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	✓
Driver Assisted Parking Assist	✓	—
Wireless Charging Pad	✓	✓
Cruise Control	✓	—
Universal Remote Transmitter	✓	—
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Overhead Console with Storage	✓	—
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Dual Zone Climate Control	✓	—
Rear Ventilation Ducts	✓	—
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Power Tilt and Telescopic Steering Wheel	—	✓
Adaptive Cruise Control	—	✓
Three Zone Climate Control	—	✓
Rear Ventilation Ducts with Fan Control	—	✓

In Car Entertainment

Feature	Mercedes-Benz	Lexus
Infotainment Display	10.25 in	9.8 in
AM/FM Stereo	✓	✓
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	6 months	3 months
Speaker System	—	12
Subwoofer Count	—	1

Power Feature

Feature	Mercedes-Benz	Lexus
One-Touch Power Windows	4	4
Keyless Entry	✓	✓
Heated Mirrors	✓	✓
Reverse Tilt Dual Mirrors	—	✓

Frontseats

Feature	Mercedes-Benz	Lexus
Front Head Room	40.7 in.	39.5 in.
Front Leg Room	41.1 in.	41.1 in.
Front Shoulder Room	55.9 in.	58.1 in.
Seat Material: Leatherette	✓	✓
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Thigh Extension	✓	—
Driver Seat Memory Settings	3	—
Passenger Seat Power Adjustments	8-way	8-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Passenger Seat Thigh Extension	✓	—
Passenger Seat Memory Settings	3	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Front Hip Room	—	56.7 in.

Rearseats

Feature	Mercedes-Benz	Lexus
Rear Head Room	39.3 in.	38.6 in.
Rear Leg Room	38.1 in.	37.4 in.
Rear Shoulder Room	54.9 in.	56.5 in.
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	✓
Rear Hip Room	—	55.9 in.

Tires and Wheels

Feature	Mercedes-Benz	Lexus
Wheel Material	Alloy	—
Wheel Size	18 x 7.5 in	19 x 8.0 in
Tire Size	235/55R18	✓
Run Flat Tires	✓	—
Painted Alloy Wheels	—	✓
Polished Alloy Wheels	—	✓
Tire Type	—	All Season
Spare Tire Type	—	Temporary
Spare Tire Location	—	Inside Mounted

Suspension

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

Warranty

Feature	Mercedes-Benz	Lexus
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	6 yr./ 70000 mi.
Corrosion/Rust Warranty	4 yr./ 50000 mi.	6 yr./ unlimited mi.
Roadside Assistance	4 yr./ 50000 mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	—	1 yr./ 10000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Mercedes-Benz GLB-Class and 2026 Lexus RX.

What is the key powertrain difference between the 2025 GLB and the 2026 RX?

The 2026 Lexus RX holds a substantial power advantage, producing 275 horsepower and 317 lb-ft of torque. In comparison, the 2025 Mercedes-Benz GLB-Class delivers 221 horsepower and 258 lb-ft of torque.

Do both vehicles require premium fuel, and how does this impact running costs?

Yes, the Mercedes-Benz GLB-Class explicitly requires premium unleaded fuel. The Lexus RX recommends premium unleaded, but its lower combined MPG of 25 versus the GLB's 28 means the RX may incur higher overall fuel expenditures despite the efficiency margin.

How much larger is the cargo area in the Lexus RX?

The 2026 Lexus RX offers significantly more utility with a cargo capacity of 29.6 cubic feet. This provides an additional 7.6 cubic feet over the 2025 Mercedes-Benz GLB-Class, which is rated at 22 cubic feet.

What is the price gap between these two luxury crossovers?

The 2026 Lexus RX carries a higher Manufacturer's Suggested Retail Price (MSRP) of $49,725. This makes it $3,925 more expensive than the 2025 Mercedes-Benz GLB-Class, which starts at $45,800.

Which vehicle is physically larger overall?

The 2026 Lexus RX is the physically larger vehicle, measuring 192.5 inches in length and 75.6 inches in width. The Mercedes-Benz GLB-Class is more compact at 182.4 inches long and 72.2 inches wide.