2025 Mercedes-Benz GLA-Class vs 2026 GMC Terrain

$43,000 · Crossover

$30,100 · Crossover

Comparison Overview

Deciding between accessible luxury and practical affordability in the compact crossover segment is tough, especially when the price gap is nearly $13,000. The 2025 Mercedes-Benz GLA-Class starts at $43,000, offering 221 hp and superior highway fuel economy at 34 MPG, though it strictly requires premium fuel. In contrast, the 2026 GMC Terrain enters the fray at a much lower $30,100, providing significantly more utility with nearly double the cargo space at 29.8 cu ft compared to the GLA's 15.4 cu ft. While the Mercedes boasts a healthier 29 MPG combined versus the Terrain's 27 MPG combined, its smaller footprint (173.6 inches long) might feel cramped next to the larger 181.0-inch Terrain. The GLA leads on performance with 258 lb-ft of torque versus the Terrain's 184 lb-ft, but this performance comes at a higher running cost.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Mercedes-Benz GLA-Class

The GLA-Class wins for commuters due to its slightly better 29 MPG combined rating and more responsive handling implied by its higher horsepower.

👨‍👩‍👧‍👦 Best for Families

2026 GMC Terrain

The 2026 Terrain is the clear family choice, offering substantially more usable space with 29.8 cu ft of cargo capacity compared to the GLA's 15.4 cu ft.

🏎️ Best for Enthusiasts

2025 Mercedes-Benz GLA-Class

The GLA-Class provides a noticeable performance edge with 221 hp and 258 lb-ft of torque, compared to the Terrain's 175 hp.

💰 Best Value

2026 GMC Terrain

The Terrain secures the value victory by offering a massive $12,900 lower starting MSRP and running on regular unleaded fuel.

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

You prioritize acceleration and powertrain refinement, benefiting from 221 hp and 258 lb-ft of torque.
Highway driving efficiency is key, as the GLA achieves 34 MPG highway.
You prefer a more compact exterior for easier city parking, given its 173.6-inch length.

Choose the GMC Terrain if...

Budget is a top concern, as the $30,100 starting price saves $12,900 over the GLA.
You need maximum utility, thanks to its generous 29.8 cu ft of cargo space.
You prefer to save on routine fueling costs by using regular unleaded gasoline instead of premium.

Key Dimensions

Dimension	Mercedes-Benz GLA-Class	GMC Terrain
Length	173.6"	181.0"
Width	72.2"	74.5"
Height	63.5"	65.8"
Wheelbase	107.4"	107.5"

Features Comparison

Safety

Feature	Mercedes-Benz	GMC
Blind Spot Monitor	✓	✓
Driver Attention Alert	✓	—
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 Ventilated 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	—	✓
Front Cross Traffic Alert	—	✓
Rear Cross Traffic Alert	—	✓
Pre-Collision Safety System	—	✓
Rear Solid Disc Brakes	—	✓

Engine

Feature	Mercedes-Benz	GMC
Base Engine Displacement	2.0 L	1.5 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	mild hybrid	gas
Horsepower	221 hp @ 5500 rpm	175 hp @ 5600 rpm
Torque	258 lb-ft @ 1800 rpm	184 lb-ft @ 1750 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	GMC
Transmission Type	8-speed automated manual	continuously variable-speed automatic
Drivetrain Type	front wheel drive	front wheel drive

Fuel

Feature	Mercedes-Benz	GMC
Fuel Type	premium unleaded (required)	regular unleaded
EPA Fuel Economy (City/Highway)	26/34 MPG	26/28 MPG
EPA Fuel Economy (Combined)	29 MPG	27 MPG
EPA Driving Range (City/Highway)	351.0/459.0 mi.	384.8/414.4 mi.
Fuel Tank Capacity	13.5 gal.	14.8 gal.

Comfort & Convenience

Feature	Mercedes-Benz	GMC
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	✓	✓
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	—	✓
Heated Steering Wheel	—	✓
Single Zone Climate Control	—	✓

In Car Entertainment

Feature	Mercedes-Benz	GMC
Infotainment Display	10.25 in	15.0 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
Speaker System	—	6
Auxiliary Audio Input	—	✓
Speed Sensitive Volume Control	—	✓

Power Feature

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

Frontseats

Feature	Mercedes-Benz	GMC
Front Head Room	39.0 in.	40.6 in.
Front Leg Room	41.0 in.	44.0 in.
Front Shoulder Room	55.9 in.	57.7 in.
Seat Material: Leatherette	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	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	—
Front Hip Room	—	55.3 in.
Seat Material: Premium Cloth	—	✓
Driver Seat Manual Adjustments	—	6-way
Passenger Seat Manual Adjustments	—	4-way
Driver Seat Heating	—	Multi-level

Rearseats

Feature	Mercedes-Benz	GMC
Rear Head Room	38.1 in.	39.2 in.
Rear Leg Room	38.0 in.	39.7 in.
Rear Shoulder Room	54.8 in.	55.7 in.
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	—
Folding Center Armrest	✓	✓
Rear Hip Room	—	51.0 in.

Tires and Wheels

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

Suspension

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

Warranty

Feature	Mercedes-Benz	GMC
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 GLA-Class and 2026 GMC Terrain.

How much more cargo room does the GMC Terrain offer compared to the Mercedes GLA?

The 2026 GMC Terrain is significantly more practical for hauling gear, providing 29.8 cu ft of cargo space. This is nearly double the 15.4 cu ft offered by the 2025 Mercedes-Benz GLA-Class.

Is the performance difference between these two crossovers noticeable for daily driving?

Yes, the Mercedes GLA has a clear power advantage with 221 hp versus the Terrain's 175 hp, which translates to quicker acceleration and better passing power on the highway.

Do I have to use premium fuel in the Mercedes-Benz GLA-Class?

Yes, the 2025 Mercedes-Benz GLA-Class strictly requires premium unleaded fuel for operation, whereas the 2026 GMC Terrain runs on regular unleaded, impacting long-term running costs.

Which crossover will save me more money overall, considering initial cost and fuel?

The 2026 GMC Terrain offers better overall value due to its $12,900 lower MSRP; however, the GLA's better combined MPG (29 vs. 27) might offset some of that over many years, assuming premium fuel costs are comparable.

What are the key differences in size between the two vehicles?

The Terrain is physically larger, measuring 181.0 inches long and 74.5 inches wide, making the GLA-Class (173.6 inches long) the more compact option for navigating tight city streets.