2025 Mercedes-Benz GLB-Class vs 2026 Buick Enclave

$45,800 · Crossover

$46,200 · Crossover

Comparison Overview

Choosing between the nimble 2025 Mercedes-Benz GLB-Class and the larger 2026 Buick Enclave often boils down to space versus running costs. If keeping fuel expenses down is critical, the GLB-Class pulls ahead easily, offering 28 MPG combined on premium fuel, while the more powerful Enclave manages just 23 MPG combined using cheaper regular unleaded. Power enthusiasts will lean toward the Enclave, boasting 328 hp and 326 lb-ft of torque compared to the GLB’s 221 hp. However, the Enclave’s imposing size—it’s over 180 inches long—contrasts with the GLB’s compact 182.4-inch footprint, which is better for city parking. Despite the size difference, both vehicles technically offer nearly identical utility, with the GLB holding 22 cu ft of cargo capacity and the Enclave slightly more at 22.9 cu ft, making the efficiency gap the biggest decision point between the $45,800 GLB and the $46,200 Enclave.

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 28 MPG combined fuel economy.

👨‍👩‍👧‍👦 Best for Families

2026 Buick Enclave

The 2026 Enclave is the better choice for families needing more interior and exterior room, measuring 207.6 inches long.

🏎️ Best for Enthusiasts

2026 Buick Enclave

Enthusiasts will prefer the Enclave's significantly higher output of 328 horsepower and 326 lb-ft of torque.

💰 Best Value

2025 Mercedes-Benz GLB-Class

The GLB-Class offers better overall fuel value by delivering 5 more MPG combined while costing slightly less upfront.

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

You prioritize efficiency, as the GLB-Class achieves 33 MPG on the highway.
You frequently navigate tight city streets, given its shorter 182.4-inch length.
You want the lower entry price point at $45,800 MSRP.

Choose the Buick Enclave if...

You need maximum power, evidenced by its 328 hp engine.
You require more passenger space, as it is a larger vehicle overall.
You prefer using regular unleaded fuel instead of premium unleaded.

Key Dimensions

Dimension	Mercedes-Benz GLB-Class	Buick Enclave
Length	182.4"	207.6"
Width	72.2"	79.6"
Height	66.7"	71.0"
Wheelbase	111.4"	120.9"

Features Comparison

Safety

Feature	Mercedes-Benz	Buick
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	—	✓
Third Row Head Airbags	—	✓
Rear Ventilated Disc Brakes	—	✓
Rear Folding Headrests	—	✓

Engine

Feature	Mercedes-Benz	Buick
Base Engine Displacement	2.0 L	2.5 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	mild hybrid	gas
Horsepower	221 hp @ 5500 rpm	328 hp @ 5500 rpm
Torque	258 lb-ft @ 1800 rpm	326 lb-ft @ 3500 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	Buick
Transmission Type	8-speed automated manual	8-speed shiftable automatic
Drivetrain Type	front wheel drive	front wheel drive

Fuel

Feature	Mercedes-Benz	Buick
Fuel Type	premium unleaded (required)	regular unleaded
EPA Fuel Economy (City/Highway)	25/33 MPG	20/27 MPG
EPA Fuel Economy (Combined)	28 MPG	23 MPG
EPA Driving Range (City/Highway)	397.5/524.7 mi.	388.0/523.8 mi.
Fuel Tank Capacity	15.9 gal.	19.4 gal.

Comfort & Convenience

Feature	Mercedes-Benz	Buick
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	✓	✓
Front View Camera	—	✓
Side View Camera	—	✓
Adaptive Cruise Control	—	✓
3rd Row Cupholders	—	✓
Manual Rear Seat Easy Entry	—	✓
Leatherette Steering Wheel	—	✓
Heated Steering Wheel	—	✓
Three Zone Climate Control	—	✓
Rear Ventilation Ducts with Fan Control	—	✓
Sun Sensor	—	✓

In Car Entertainment

Feature	Mercedes-Benz	Buick
Infotainment Display	10.25 in	30.0 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
Premium Speaker Brand	—	Bose
Speaker System	—	12
Subwoofer Count	—	1
Auxiliary Audio Input	—	✓
Speed Sensitive Volume Control	—	✓

Power Feature

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

Frontseats

Feature	Mercedes-Benz	Buick
Front Head Room	40.7 in.	42.6 in.
Front Leg Room	41.1 in.	44.3 in.
Front Shoulder Room	55.9 in.	62.2 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	6-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	—	58.7 in.
Passenger Seat Manual Adjustments	—	2-way

Rearseats

Feature	Mercedes-Benz	Buick
Rear Head Room	39.3 in.	40.0 in.
Rear Leg Room	38.1 in.	41.5 in.
Rear Shoulder Room	54.9 in.	62.1 in.
Split-Folding Rear Seatback	✓	—
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	✓
Rear Hip Room	—	58.5 in.
Folding Rear Seatback	—	✓
Manual Folding Third Row Seat	—	✓

Tires and Wheels

Feature	Mercedes-Benz	Buick
Wheel Material	Alloy	—
Wheel Size	18 x 7.5 in	—
Tire Size	235/55R18	P255/55R20
Run Flat Tires	✓	—
Wheel Finish	—	Painted Alloy
Wheel Diameter	—	20 in.
Tire Type	—	All Season
Spare Tire Type	—	Temporary
Spare Tire Location	—	Underbody Mounted

Suspension

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

Warranty

Feature	Mercedes-Benz	Buick
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.	6 yr./ 100000 mi.
Roadside Assistance	4 yr./ 50000 mi.	5 yr./ 60000 mi.
Complimentary Scheduled Maintenance	—	1 yr./ unlimited mi.

Frequently Asked Questions

Common questions about comparing the 2025 Mercedes-Benz GLB-Class and 2026 Buick Enclave.

Which vehicle is going to be easier to park in a crowded urban setting?

The 2025 Mercedes-Benz GLB-Class is significantly more manageable for parking due to its compact dimensions. The GLB measures 182.4 inches in length, whereas the 2026 Buick Enclave is considerably longer at 207.6 inches.

How much more power does the Buick Enclave offer over the Mercedes GLB?

The Buick Enclave offers a substantial power advantage, generating 328 hp compared to the GLB-Class's 221 hp, resulting in a 107 hp difference.

Is the GLB-Class or the Enclave more expensive to fuel on a daily basis?

The GLB-Class will be cheaper to fuel regularly because it returns 28 MPG combined versus the Enclave's 23 MPG combined, saving on trips to the pump.

Does the larger Enclave provide substantially more storage space than the GLB?

The difference in core cargo space is marginal; the Enclave offers 22.9 cu ft while the GLB is right behind at 22 cu ft, despite the Enclave being much larger externally.

Is there a difference in the required fuel type between these two crossovers?

Yes, the Mercedes-Benz GLB-Class mandates the use of premium unleaded fuel for its 221 hp engine. Conversely, the higher-output 2026 Buick Enclave runs happily on regular unleaded.