2025 GMC Terrain vs 2025 Mercedes-Benz GLB-Class

$30,000 · Crossover

$45,800 · Crossover

Comparison Overview

Deciding between premium badge appeal and sheer budget savings is the core dilemma when cross-shopping the 2025 GMC Terrain and the 2025 Mercedes-Benz GLB-Class. The GLB-Class immediately positions itself as the more powerful contender, boasting 221 hp versus the Terrain's 175 hp, translating to quicker sprints, although it mandates the more expensive premium unleaded fuel. Surprisingly, the GLB-Class edges out the Terrain slightly on efficiency with a combined 28 MPG compared to the Terrain's 27 MPG. However, the significant $15,800 MSRP gap is where the Terrain shines; priced at $30,000, it offers tremendous practicality for far less upfront cost. While the GLB-Class is fractionally longer at 182.4 inches, the Terrain wins on utility, offering 29.8 cubic feet of cargo space against the Mercedes’ 22 cubic feet, making the GMC the sensible choice for maximizing utility dollars.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 GMC Terrain

The 2025 GMC Terrain wins for daily commuting due to its substantially lower $30,000 MSRP and standard regular unleaded fuel requirement.

👨‍👩‍👧‍👦 Best for Families

2025 GMC Terrain

With 29.8 cu ft of cargo capacity compared to the GLB-Class's 22 cu ft, the Terrain offers superior practical space for family gear.

🏎️ Best for Enthusiasts

2025 Mercedes-Benz GLB-Class

The 2025 Mercedes-Benz GLB-Class is the clear winner here, producing 221 hp and 258 lb-ft of torque versus the Terrain's 175 hp.

💰 Best Value

2025 GMC Terrain

The $15,800 lower starting price of the GMC Terrain makes it overwhelmingly the better value proposition for the typical crossover buyer.

Choose the GMC Terrain if...

You absolutely must keep your initial purchase price near the $30,000 mark.
You prioritize maximum usable cargo volume, as 29.8 cu ft beats the GLB-Class significantly.
You want to save money over time by running on regular unleaded fuel instead of premium.

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

You are willing to spend $15,800 more for higher performance with 221 hp.
You prefer the slightly better highway efficiency, achieving 33 MPG highway versus the Terrain's 28 MPG.
You desire the driving experience provided by the 8-speed automated manual transmission.

Key Dimensions

Dimension	GMC Terrain	Mercedes-Benz GLB-Class
Length	181.0"	182.4"
Width	74.5"	72.2"
Height	66.2"	66.7"
Wheelbase	107.5"	111.4"

Features Comparison

Safety

Feature	GMC	Mercedes-Benz
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	—
Lane Keeping Assist System	✓	—
Front Cross Traffic Alert	✓	—
Rear Cross Traffic 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
Front Ventilated Disc Brakes	✓	✓
Rear Solid Disc Brakes	✓	✓
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
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	✓	✓
Driver Attention Alert	—	✓
Brake Drying	—	✓
Brake Preparation System	—	✓
Front Fog Lights	—	✓
Integrated Turn Signal Mirrors	—	✓

Engine

Feature	GMC	Mercedes-Benz
Base Engine Displacement	1.5 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	gas	mild hybrid
Horsepower	175 hp @ 5800 rpm	221 hp @ 5500 rpm
Torque	203 lb-ft @ 2000 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	GMC	Mercedes-Benz
Transmission Type	continuously variable-speed automatic	8-speed automated manual
Drivetrain Type	front wheel drive	front wheel drive
Hill Descent Control	✓	—

Fuel

Feature	GMC	Mercedes-Benz
Fuel Type	regular unleaded	premium unleaded (required)
EPA Fuel Economy (City/Highway)	26/28 MPG	25/33 MPG
EPA Fuel Economy (Combined)	27 MPG	28 MPG
EPA Driving Range (City/Highway)	384.8/414.4 mi.	397.5/524.7 mi.
Fuel Tank Capacity	14.8 gal.	15.9 gal.

Comfort & Convenience

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

In Car Entertainment

Feature	GMC	Mercedes-Benz
Infotainment Display	15.0 in	10.25 in
AM/FM Stereo	✓	✓
Speaker System	6	—
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
Auxiliary Audio Input	✓	—
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	6 months
Speed Sensitive Volume Control	✓	—

Power Feature

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

Frontseats

Feature	GMC	Mercedes-Benz
Front Head Room	40.0 in.	40.7 in.
Front Leg Room	40.6 in.	41.1 in.
Front Shoulder Room	57.7 in.	55.9 in.
Front Hip Room	55.3 in.	—
Seat Material: Premium Cloth	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Manual Adjustments	6-way	—
Driver Seat Height Adjustment	✓	✓
Passenger Seat Manual Adjustments	4-way	—
Driver Seat Heating	Multi-level	Multi-level
Seat Material: Leatherette	—	✓
Driver Seat Power Adjustments	—	8-way
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
Passenger Seat Heating	—	Multi-level

Rearseats

Feature	GMC	Mercedes-Benz
Rear Head Room	39.2 in.	39.3 in.
Rear Leg Room	39.2 in.	38.1 in.
Rear Shoulder Room	55.7 in.	54.9 in.
Rear Hip Room	51.0 in.	—
Split-Folding Rear Seatback	✓	✓
Folding Center Armrest	✓	✓
Reclining Rear Seats	—	✓

Tires and Wheels

Feature	GMC	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	17 x 7.0 in	18 x 7.5 in
Tire Type	All Season	—
Tire Size	235/65R17	235/55R18
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Material	—	Alloy
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	GMC	Mercedes-Benz
Basic Warranty	3 yr./ 36000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	5 yr./ 60000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	6 yr./ 100000 mi.	4 yr./ 50000 mi.
Roadside Assistance	5 yr./ 60000 mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	1 yr./ unlimited mi.	—

Frequently Asked Questions

Common questions about comparing the 2025 GMC Terrain and 2025 Mercedes-Benz GLB-Class.

What is the main performance difference between the 2025 Terrain and the 2025 GLB-Class?

The Mercedes-Benz GLB-Class is substantially more powerful, generating 221 hp and 258 lb-ft of torque. The GMC Terrain trails with 175 hp and 203 lb-ft of torque, making the GLB-Class the quicker vehicle in a straight line.

Is the fuel cost difference between these two crossovers significant?

Yes, the difference is twofold: the GLB-Class requires premium unleaded fuel, increasing running costs, whereas the Terrain runs on regular unleaded. While the GLB-Class gets 1 MPG better combined (28 vs 27), the fuel type is the deciding factor for budget-conscious drivers.

Which crossover offers better utility for hauling groceries or gear?

The 2025 GMC Terrain is the clear choice for utility shoppers, offering 29.8 cubic feet of cargo capacity behind the rear seats. The 2025 Mercedes-Benz GLB-Class offers notably less space at 22 cubic feet.

How much more expensive is the GLB-Class compared to the Terrain?

The difference in Manufacturer's Suggested Retail Price (MSRP) is substantial, standing at $15,800. The Terrain starts at $30,000, while the GLB-Class commands a starting price of $45,800.

Do the external dimensions differ enough to affect parking ease?

The dimensions are very similar, both being compact crossovers; the Terrain is slightly shorter in length (181.0 inches) but a touch wider (74.5 inches). Parking ease will likely be comparable between the two models.

Which vehicle uses a conventional automatic transmission?

The 2025 GMC Terrain utilizes a continuously variable-speed automatic transmission (CVT). The 2025 Mercedes-Benz GLB-Class uses a more traditional-feeling 8-speed automated manual transmission.