2025 GMC Terrain vs 2026 Mercedes-Benz GLA

$30,000 · Crossover

$41,500 · Crossover

Comparison Overview

The $11,500 MSRP difference is the most significant gap between the 2025 GMC Terrain ($30,000) and the 2026 Mercedes-Benz GLA ($41,500). Performance metrics favor the GLA, boasting 221 hp and 258 lb-ft of torque compared to the Terrain’s 175 hp and 203 lb-ft. Economically, the GLA edges out the Terrain slightly in efficiency, achieving 29 combined MPG versus the Terrain's 27 combined MPG, though the GLA requires premium fuel. However, the Terrain offers substantially more utility, measuring 181.0 inches long and providing 29.8 cubic feet of cargo space, significantly overshadowing the GLA’s 173.6-inch length and meager 15.4 cu ft of cargo volume. While the GLA delivers a more potent powertrain, the Terrain dominates in practical dimensions and initial purchase price for the segment comparison.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz GLA

The 2026 GLA offers superior fuel economy at 34 MPG highway compared to the Terrain's 28 MPG highway, despite requiring premium fuel.

👨‍👩‍👧‍👦 Best for Families

2025 GMC Terrain

The 2025 Terrain provides nearly double the utility with 29.8 cu ft of cargo capacity compared to the GLA's 15.4 cu ft.

🏎️ Best for Enthusiasts

2026 Mercedes-Benz GLA

The 2026 GLA provides significantly higher output with 221 hp and 258 lb-ft of torque versus the Terrain's 175 hp and 203 lb-ft.

💰 Best Value

2025 GMC Terrain

The GMC Terrain commands significantly better value with a $11,500 lower MSRP while still offering competitive utility.

Choose the GMC Terrain if...

Absolute lowest upfront cost is the priority, given the $30,000 MSRP.
Maximum cargo capacity is needed, as it offers 29.8 cu ft versus 15.4 cu ft.
Routine fueling with regular unleaded gasoline is preferred over premium requirement.

Choose the Mercedes-Benz GLA if...

A higher power density is desired, utilizing the 221 hp engine.
Superior highway fuel efficiency (34 MPG) is essential for long commutes.
The smaller footprint (173.6 inches long) is beneficial for urban parking maneuvers.

Key Dimensions

Dimension	GMC Terrain	Mercedes-Benz GLA
Length	181.0"	173.6"
Width	74.5"	72.2"
Height	66.2"	63.5"
Wheelbase	107.5"	107.4"

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	—	✓
Rear Ventilated Disc Brakes	—	✓
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	26/34 MPG
EPA Fuel Economy (Combined)	27 MPG	29 MPG
EPA Driving Range (City/Highway)	384.8/414.4 mi.	351.0/459.0 mi.
Fuel Tank Capacity	14.8 gal.	13.5 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	—	✓
Cruise Control	—	✓
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	✓	✓
Remote Keyless Entry	—	✓

Frontseats

Feature	GMC	Mercedes-Benz
Front Head Room	40.0 in.	39.0 in.
Front Leg Room	40.6 in.	41.0 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	—
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

Rearseats

Feature	GMC	Mercedes-Benz
Rear Head Room	39.2 in.	38.1 in.
Rear Leg Room	39.2 in.	38.0 in.
Rear Shoulder Room	55.7 in.	54.8 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.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 GMC Terrain and 2026 Mercedes-Benz GLA.

How does the fuel requirement impact the long-term running costs between these two crossovers?

The 2026 GLA requires premium unleaded fuel, adding cost per gallon, whereas the 2025 Terrain runs on regular unleaded. While the GLA achieves 29 combined MPG to the Terrain's 27, the premium fuel requirement often negates this slight efficiency edge over time.

Is the size difference between the two vehicles substantial for daily driving?

Yes, the 2025 Terrain is substantially larger, measuring 181.0 inches long compared to the GLA's 173.6 inches. This 7.4-inch difference is reflected primarily in the vast difference in cargo space.

Which vehicle offers superior measurable performance capabilities based on specifications?

The 2026 GLA offers superior measurable performance, generating 221 horsepower and 258 lb-ft of torque. The Terrain trails significantly with 175 hp and 203 lb-ft of torque, indicating the GLA will provide faster acceleration.

What is the trade-off between the low entry price of the Terrain and the higher price of the GLA?

The $11,500 lower MSRP for the Terrain buys significantly more physical utility (29.8 cu ft cargo vs 15.4 cu ft) and uses a less complex CVT transmission, while the GLA’s higher cost purchases a premium badge and a more powerful engine setup with an 8-speed automated manual.

How do the transmissions differ between the 2025 Terrain and 2026 GLA?

The GMC Terrain utilizes a continuously variable-speed automatic transmission (CVT) tuned for efficiency, whereas the Mercedes-Benz GLA employs a more traditional 8-speed automated manual transmission.