2025 Kia Sorento vs 2025 Mercedes-Benz GLB-Class

$31,990 · Crossover

$45,800 · Crossover

Comparison Overview

Deciding between practical value and badge prestige is a common hurdle, especially when comparing two compact crossovers like the 2025 Kia Sorento and the 2025 Mercedes-Benz GLB-Class. The financial gap is substantial: the Sorento starts at $31,990, significantly undercutting the GLB-Class’s $45,800 MSRP by $13,810. While the GLB-Class offers better performance with 221 hp versus the Sorento's 191 hp, the Kia achieves a comparable 26 MPG combined on regular unleaded, whereas the Mercedes demands premium fuel for its slightly better 28 MPG combined rating. Furthermore, the Sorento is physically larger at 189.6 inches long, yet the GLB-Class surprisingly provides nearly double the base cargo space at 22 cubic feet compared to the Sorento's 12.6 cu ft. This comparison hinges on whether upfront savings and size matter more than premium engineering and marginally superior efficiency.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Kia Sorento

The Kia Sorento wins for commuters due to its much lower initial price of $31,990, making daily driving costs less burdensome.

👨‍👩‍👧‍👦 Best for Families

2025 Mercedes-Benz GLB-Class

The Mercedes-Benz GLB-Class offers superior cargo capacity at 22 cu ft, which is crucial for family hauling.

🏎️ Best for Enthusiasts

2025 Mercedes-Benz GLB-Class

The Mercedes provides a significant 30 hp advantage, delivering 221 hp compared to the Sorento's 191 hp.

💰 Best Value

2025 Kia Sorento

The Sorento offers significantly lower ownership costs, saving $13,810 upfront and running on cheaper regular unleaded fuel.

Choose the Kia Sorento if...

You prioritize saving money, given the massive $13,810 starting MSRP difference.
You prefer the reliability of regular unleaded fuel over the Mercedes' premium requirement.
You need a longer overall vehicle dimension at 189.6 inches for road presence, despite the smaller base cargo area.

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

You value the punchier performance offered by 221 horsepower and 258 lb-ft of torque.
You need the best dedicated cargo volume, with the GLB-Class offering 22 cu ft.
You prefer the handling characteristics associated with the 8-speed automated manual transmission.

Key Dimensions

Dimension	Kia Sorento	Mercedes-Benz GLB-Class
Length	189.6"	182.4"
Width	74.8"	72.2"
Height	66.7"	66.7"
Wheelbase	110.8"	111.4"

Features Comparison

Safety

Feature	Kia	Mercedes-Benz
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	—
Lane Keeping Assist System	✓	—
Rear Cross Traffic Alert	✓	—
Driver Attention Alert	✓	✓
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Dual Rear Side-Mounted Airbags	✓	—
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Third Row 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	✓	✓
LED Headlights	✓	✓
Daytime Running 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	✓	✓
Brake Drying	—	✓
Brake Preparation System	—	✓
Headlight Delay-Off	—	✓
Front Fog Lights	—	✓

Engine

Feature	Kia	Mercedes-Benz
Base Engine Displacement	2.5 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	gas	mild hybrid
Horsepower	191 hp @ 6100 rpm	221 hp @ 5500 rpm
Torque	181 lb-ft @ 4000 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	Kia	Mercedes-Benz
Transmission Type	8-speed automatic	8-speed automated manual
Drivetrain Type	front wheel drive	front wheel drive
Hill Descent Control	✓	—

Fuel

Feature	Kia	Mercedes-Benz
Fuel Type	regular unleaded	premium unleaded (required)
EPA Fuel Economy (City/Highway)	23/31 MPG	25/33 MPG
EPA Fuel Economy (Combined)	26 MPG	28 MPG
EPA Driving Range (City/Highway)	407.1/548.7 mi.	397.5/524.7 mi.
Fuel Tank Capacity	17.7 gal.	15.9 gal.

Comfort & Convenience

Feature	Kia	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	✓	✓
Adaptive Cruise Control	✓	—
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
3rd Row Cupholders	✓	—
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Manual Rear Seat Easy Entry	✓	—
Single Zone Climate Control	✓	—
Rear Ventilation Ducts	✓	✓
Extended Cabin Heating/Cooling	✓	—
Dual Vanity Mirrors	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Transmission Controls on Steering Wheel	—	✓
Front Parking Sensors	—	✓
Rear 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	—	✓
Interior Air Filtration	—	✓
Auto-Dimming Rearview Mirror	—	✓

In Car Entertainment

Feature	Kia	Mercedes-Benz
Infotainment Display	12.3 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

Power Feature

Feature	Kia	Mercedes-Benz
One-Touch Power Windows	1	4
Keyless Entry	✓	✓
Heated Mirrors	✓	✓

Frontseats

Feature	Kia	Mercedes-Benz
Front Head Room	40.3 in.	40.7 in.
Front Leg Room	41.4 in.	41.1 in.
Front Shoulder Room	59.1 in.	55.9 in.
Front Hip Room	55.6 in.	—
Seat Material: Cloth	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Manual Adjustments	6-way	—
Driver Seat Height Adjustment	✓	✓
Passenger Seat Manual Adjustments	4-way	—
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
Driver Seat Heating	—	Multi-level
Passenger Seat Heating	—	Multi-level

Rearseats

Feature	Kia	Mercedes-Benz
Rear Head Room	39.1 in.	39.3 in.
Rear Leg Room	41.7 in.	38.1 in.
Rear Shoulder Room	58.1 in.	54.9 in.
Rear Hip Room	55.1 in.	—
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	✓
Manual Folding Third Row Seat	✓	—

Tires and Wheels

Feature	Kia	Mercedes-Benz
Wheel Material	Alloy	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	—
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	Kia	Mercedes-Benz
Basic Warranty	5 yr./ 60000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	10 yr./ 100000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	5 yr./ 100000 mi.	4 yr./ 50000 mi.
Roadside Assistance	5 yr./ 60000 mi.	4 yr./ 50000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Kia Sorento and 2025 Mercedes-Benz GLB-Class.

What is the real-world fuel economy difference between these two crossovers?

The Mercedes GLB-Class technically has better efficiency, rated at 28 MPG combined versus the Sorento's 26 MPG combined. However, the Kia runs on regular unleaded, while the Mercedes strictly requires premium fuel, which often negates the 2 MPG advantage when calculating total trip expenses.

Is the Kia Sorento much bigger than the Mercedes GLB-Class?

Yes, in length, the Kia Sorento is noticeably longer, measuring 189.6 inches compared to the GLB-Class's 182.4 inches. Despite being longer overall, the GLB-Class excels in the rear storage area, offering 22 cu ft of cargo space versus the Kia's 12.6 cu ft.

How does the required fuel type affect the cost of ownership?

This is a major factor, as the Kia Sorento uses regular unleaded, keeping refueling costs lower. The Mercedes-Benz GLB-Class mandates premium unleaded, adding considerable expense per fill-up over time, which must be factored against its slightly better 28 MPG rating.

Which vehicle is better for spirited driving?

The Mercedes GLB-Class is the better choice for performance enthusiasts, boasting 221 hp and 258 lb-ft of torque. This offers a substantial 30 hp edge over the 191 hp found in the standard 2025 Kia Sorento.

If I need three rows, which one should I consider?

While both are listed as crossovers, the standard cargo capacity suggests the Kia Sorento’s larger overall footprint (189.6 inches long) might be more accommodating if you are looking at optional third-row seating configurations, though this comparison only lists their base capacities.

What is the most significant factor to consider between the starting prices?

The $13,810 price disparity means the Sorento is the clear winner for budget-conscious buyers. You could purchase the Kia and upgrade several key features and still remain under the Mercedes' base MSRP.