2025 Mercedes-Benz GLB-Class vs 2026 Subaru Ascent

$45,800 · Crossover

$40,795 · Crossover

Comparison Overview

The 2025 Mercedes-Benz GLB-Class launches the premium compact segment with undeniable style and efficiency, offering 221 hp and a combined 28 MPG while demanding premium fuel. Conversely, the redesigned 2026 Subaru Ascent charges forward with brute force, boasting 260 hp and 277 lb-ft of torque from its standard AWD platform, though its thirst is quenched by regular unleaded and yields only 22 MPG combined. The GLB stands slightly more compact at 182.4 inches long, perfectly sized for urban navigation, whereas the Ascent stretches to 196.8 inches, suggesting more utility, despite having slightly less cargo volume at 22 cu ft (GLB) versus 17.8 cu ft (Ascent). This contest pits German efficiency and badge prestige against robust, all-weather American capability, separated by a $5,005 MSRP gap that favors the Ascent’s initial entry price.

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, achieving 33 highway MPG compared to the Ascent's 26 MPG highway.

👨‍👩‍👧‍👦 Best for Families

2026 Subaru Ascent

The Ascent is favored for families due to its larger exterior dimensions (196.8 inches long) and standard All-Wheel Drive capability.

🏎️ Best for Enthusiasts

2026 Subaru Ascent

Enthusiasts will prefer the Ascent's higher output of 260 hp and 277 lb-ft of torque, offering a more spirited drive.

💰 Best Value

2026 Subaru Ascent

The Ascent offers superior power for a substantially lower starting MSRP of $40,795 versus the GLB's $45,800.

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

You prioritize fuel efficiency, evidenced by its 28 combined MPG rating.
You require the lower running cost associated with regular unleaded fuel.
You prefer a slightly smaller, more nimble footprint at 182.4 inches in length for urban driving.

Choose the Subaru Ascent if...

You need robust traction from the standard All-Wheel Drive system.
Maximum power is key, as the Ascent delivers 260 hp versus the GLB's 221 hp.
You are mindful of initial outlay, as the Ascent starts $5,005 less expensive than the GLB.

Key Dimensions

Dimension	Mercedes-Benz GLB-Class	Subaru Ascent
Length	182.4"	196.8"
Width	72.2"	76.0"
Height	66.7"	71.6"
Wheelbase	111.4"	113.8"

Features Comparison

Safety

Feature	Mercedes-Benz	Subaru
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	2
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	—	✓
Rear Ventilated Disc Brakes	—	✓
Adaptive Headlights	—	✓
Self-Leveling Headlights	—	✓

Engine

Feature	Mercedes-Benz	Subaru
Base Engine Displacement	2.0 L	2.4 L
Number of Cylinders	inline 4	flat 4
Base Engine Type	mild hybrid	gas
Horsepower	221 hp @ 5500 rpm	260 hp @ 5600 rpm
Torque	258 lb-ft @ 1800 rpm	277 lb-ft @ 2000 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	Subaru
Transmission Type	8-speed automated manual	continuously variable-speed automatic
Drivetrain Type	front wheel drive	all wheel drive
Center Differential Type	—	Limited Slip
Hill Descent Control	—	✓

Fuel

Feature	Mercedes-Benz	Subaru
Fuel Type	premium unleaded (required)	regular unleaded
EPA Fuel Economy (City/Highway)	25/33 MPG	20/26 MPG
EPA Fuel Economy (Combined)	28 MPG	22 MPG
EPA Driving Range (City/Highway)	397.5/524.7 mi.	386.0/501.8 mi.
Fuel Tank Capacity	15.9 gal.	19.3 gal.

Comfort & Convenience

Feature	Mercedes-Benz	Subaru
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	✓	✓
Adaptive Cruise Control	—	✓
3rd Row Cupholders	—	✓
Three Zone Climate Control	—	✓

In Car Entertainment

Feature	Mercedes-Benz	Subaru
Infotainment Display	10.25 in	11.6 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	—
Speaker System	—	6
Auxiliary Audio Input	—	✓
Satellite Radio Trial Length	—	4 months

Power Feature

Feature	Mercedes-Benz	Subaru
One-Touch Power Windows	4	2
Keyless Entry	✓	✓
Heated Mirrors	✓	✓

Frontseats

Feature	Mercedes-Benz	Subaru
Front Head Room	40.7 in.	41.2 in.
Front Leg Room	41.1 in.	42.2 in.
Front Shoulder Room	55.9 in.	61.1 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	—
Driver Seat Thigh Extension	✓	—
Driver Seat Memory Settings	3	—
Passenger Seat Power Adjustments	8-way	—
Passenger Seat Height Adjustment	✓	—
Passenger Seat Lumbar Support	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	—	57.8 in.
Passenger Seat Manual Adjustments	—	4-way

Rearseats

Feature	Mercedes-Benz	Subaru
Rear Head Room	39.3 in.	40.0 in.
Rear Leg Room	38.1 in.	38.6 in.
Rear Shoulder Room	54.9 in.	60.3 in.
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	—
Folding Center Armrest	✓	✓
Rear Hip Room	—	57.5 in.
Manual Folding Third Row Seat	—	✓

Tires and Wheels

Feature	Mercedes-Benz	Subaru
Wheel Material	Alloy	Alloy
Wheel Size	18 x 7.5 in	18 x 7.5 in
Tire Size	235/55R18	245/60R
Run Flat Tires	✓	—
Tire Type	—	All Season
Spare Tire Type	—	Temporary
Spare Tire Location	—	Underbody Mounted

Suspension

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

Warranty

Feature	Mercedes-Benz	Subaru
Basic Warranty	4 yr./ 50000 mi.	3 yr./ 36000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	5 yr./ 60000 mi.
Corrosion/Rust Warranty	4 yr./ 50000 mi.	5 yr./ unlimited mi.
Roadside Assistance	4 yr./ 50000 mi.	3 yr./ 36000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Mercedes-Benz GLB-Class and 2026 Subaru Ascent.

How does the fuel requirement impact the total cost of ownership between these two crossovers?

The 2025 GLB-Class strictly requires premium unleaded fuel, which is typically more expensive per gallon than the regular unleaded used by the 2026 Ascent. Furthermore, the GLB achieves 28 MPG combined versus the Ascent's 22 MPG combined, meaning the GLB requires more frequent, more expensive fill-ups over time.

Is the 2026 Subaru Ascent significantly larger than the Mercedes-Benz GLB-Class?

Yes, the Ascent is substantially larger, measuring 196.8 inches long and 76.0 inches wide, compared to the GLB's 182.4-inch length and 72.2-inch width. This larger external stature suggests greater cabin presence, even though the GLB technically offers slightly more cargo volume at 22 cu ft versus the Ascent's 17.8 cu ft.

Which vehicle offers better straight-line acceleration performance?

The 2026 Subaru Ascent pulls ahead significantly in power specifications, generating 260 hp and 277 lb-ft of torque. The GLB-Class offers a modest 221 hp and 258 lb-ft of torque, making the Ascent the clear choice for driving enthusiasts.

What is the practical difference in transmission technology?

The GLB utilizes an 8-speed automated manual transmission designed for crisp shifts, whereas the Ascent relies on a continuously variable-speed automatic (CVT). The choice between them often comes down to driver preference: defined gear changes versus smooth, unstepped acceleration.

Why is the GLB-Class so much more expensive if its power output is lower?

The $5,005 price difference reflects the premium branding, perceived luxury appointments, and the technological cachet associated with the Mercedes-Benz nameplate. While the GLB produces less horsepower, it compensates with a higher standard of interior refinement and superior fuel economy.

If I prioritize navigating tight city parking, which crossover has the edge?

The 2025 Mercedes-Benz GLB-Class is the preferable choice for city dwellers due to its smaller overall dimensions, specifically its 182.4-inch length. Its marginally narrower body at 72.2 inches also helps in squeezing into tighter street parking spots.