2025 Kia Sorento Hybrid vs 2026 Mercedes-Benz GLB

$38,690 · Crossover

$43,800 · Crossover

Comparison Overview

Deciding between the practicality of the 2025 Kia Sorento Hybrid and the prestige of the 2026 Mercedes-Benz GLB often comes down to balancing immediate costs against long-term running expenses and sheer utility. The initial sticker shock shows the Kia starts at $38,690, undercutting the Mercedes' $43,800 MSRP by a notable $5,110. While power outputs are similar, with the Kia offering 227 hp against the Mercedes' 221 hp, the efficiency gap is substantial. The Sorento Hybrid boasts a combined 34 MPG (34/34 City/Highway), significantly better than the GLB’s 28 combined MPG (25/33). However, the GLB offers far more space, delivering 22 cu ft of cargo capacity versus the Sorento Hybrid's smaller 12.6 cu ft. Furthermore, the Kia runs happily on regular unleaded, while the Mercedes requires premium fuel, adding to its operational cost.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Kia Sorento Hybrid

The 2025 Kia Sorento Hybrid wins due to its superior 34 MPG combined fuel economy, which reduces weekly trips to the gas station.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz GLB

The 2026 Mercedes-Benz GLB offers nearly double the usable space with 22 cu ft of cargo capacity compared to the Kia's 12.6 cu ft.

🏎️ Best for Enthusiasts

2025 Kia Sorento Hybrid

Despite having slightly less torque, the Kia Sorento Hybrid provides marginally more horsepower at 227 hp and uses regular fuel, making it cheaper to run hard.

💰 Best Value

2025 Kia Sorento Hybrid

The Sorento Hybrid wins on value by saving $5,110 upfront and offering a 6 MPG efficiency advantage over the GLB.

Choose the Kia Sorento Hybrid if...

Your primary concern is minimizing fuel costs, thanks to its class-leading 34 MPG combined rating.
You want to save immediately, as the MSRP is $5,110 less than the competitor at $38,690.
You prefer a traditional automatic feel, utilizing a 6-speed shiftable automatic transmission over an automated manual.

Choose the Mercedes-Benz GLB if...

You absolutely require maximum storage, as 22 cu ft of cargo capacity is significantly greater than the Kia's 12.6 cu ft.
You appreciate the engineering refinement suggested by the required premium fuel and the 8-speed automated manual transmission.
You prefer a slightly more compact vehicle footprint, as the GLB is over 7 inches shorter in length (182.4 inches vs 189.6 inches).

Key Dimensions

Dimension	Kia Sorento Hybrid	Mercedes-Benz GLB
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 Ventilated Disc Brakes	✓	—
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	2	3
Rear Height Adjustable Headrests	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Brake Drying	—	✓
Rear Solid Disc Brakes	—	✓
Brake Preparation System	—	✓
Rear Center 3-Point Seatbelt	—	✓
Engine Immobilizer	—	✓

Engine

Feature	Kia	Mercedes-Benz
Base Engine Displacement	1.6 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	hybrid	mild hybrid
Horsepower	227 hp	221 hp @ 5500 rpm
Torque	258 lb-ft	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	6-speed shiftable 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)	34/34 MPG	25/33 MPG
EPA Fuel Economy (Combined)	34 MPG	28 MPG
EPA Driving Range (City/Highway)	601.8/601.8 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	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	✓
Wireless Charging Pad	✓	—
Adaptive Cruise Control	✓	—
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
3rd Row Cupholders	✓	—
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Overhead Console with Storage	✓	✓
Front Seatback Storage	✓	✓
Manual Rear Seat Easy Entry	✓	—
Leather Steering Wheel	✓	✓
Dual Zone Climate Control	✓	✓
Rear Ventilation Ducts	✓	✓
Extended Cabin Heating/Cooling	✓	—
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Transmission Controls on Steering Wheel	—	✓
Driver Assisted Parking Assist	—	✓
Cruise Control	—	✓
Interior Air Filtration	—	✓

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	✓	✓
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	✓	✓
Remote Keyless Entry	—	✓

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: Leatherette	✓	✓
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Passenger Seat Power Adjustments	8-way	8-way
Passenger Seat Height Adjustment	✓	✓
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Thigh Extension	—	✓
Driver Seat Memory Settings	—	3
Passenger Seat Lumbar Support	—	Power
Passenger Seat Thigh Extension	—	✓
Passenger Seat Memory Settings	—	3

Rearseats

Feature	Kia	Mercedes-Benz
Rear Head Room	39.1 in.	39.3 in.
Rear Leg Room	40.7 in.	38.1 in.
Rear Shoulder Room	58.1 in.	54.9 in.
Rear Hip Room	55.1 in.	—
Folding Rear Seatback	✓	—
Reclining Rear Seats	✓	✓
One-Piece Folding Third Row Seat	✓	—
Split-Folding Rear Seatback	—	✓
Folding Center Armrest	—	✓

Tires and Wheels

Feature	Kia	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Diameter	19 in	—
Tire Type	All Season	—
Tire Size	235/55R19	235/55R18
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Material	—	Alloy
Wheel Size	—	18 x 7.5 in
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.
EV Battery Warranty	10 yr./ 100000 mi.	—
Hybrid Component Warranty	10 yr./ 100000 mi.	6 yr./ 62000 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 Hybrid and 2026 Mercedes-Benz GLB.

Is the Kia Sorento Hybrid or the Mercedes-Benz GLB more expensive to maintain long-term?

The Kia Sorento Hybrid is generally cheaper to run, partly because it requires regular unleaded fuel, whereas the Mercedes GLB mandates premium unleaded. Additionally, the Kia's 34 MPG is much better than the GLB's 28 MPG, saving money at every fill-up.

How do the performance figures compare between these two crossovers?

They are quite close in raw power, with the Kia Sorento Hybrid edging out the Mercedes GLB slightly, offering 227 hp compared to the GLB's 221 hp. Both vehicles share an identical 258 lb-ft of torque.

Which vehicle offers more practical space for hauling gear?

The 2026 Mercedes-Benz GLB is the clear winner for cargo, offering 22 cu ft of storage space behind the second row. The 2025 Kia Sorento Hybrid is much tighter, providing only 12.6 cu ft.

What is the dollar difference between these two models at the entry level?

The 2026 Mercedes-Benz GLB starts at $43,800, which is exactly $5,110 more expensive than the 2025 Kia Sorento Hybrid starting MSRP of $38,690.

Are there significant differences in their exterior size?

Yes, the Kia Sorento Hybrid is physically longer at 189.6 inches compared to the GLB's 182.4 inches, though both share the same height of 66.7 inches.

How does the transmission type impact the driving experience?

The Kia uses a conventional 6-speed shiftable automatic, which typically offers smooth, predictable shifting. The Mercedes GLB utilizes an 8-speed automated manual, which focuses more on efficiency and can sometimes feel different during gear changes compared to a standard automatic.