2025 Kia Sorento Plug-In Hybrid vs 2026 Mercedes-Benz GLB
Comparison Overview
The most significant numerical divergence between the 2025 Kia Sorento Plug-In Hybrid (PHEV) and the 2026 Mercedes-Benz GLB is the $4,190 MSRP gap, with the Kia priced at $47,990 versus the Mercedes at $43,800. Performance metrics show the Sorento PHEV offering 261 hp, a notable 40 hp advantage over the GLB’s 221 hp, although both share an identical 258 lb-ft of torque. Fuel economy heavily favors the Kia, achieving a combined 33 MPG (using its hybrid system) compared to the GLB's 28 combined MPG, plus the Sorento provides a 30-mile all-electric range. Dimensionally, the Sorento is substantially longer at 189.6 inches versus 182.4 inches for the GLB. However, the GLB compensates with superior utility, offering 22.0 cu ft of cargo capacity compared to the Sorento’s 12.6 cu ft, despite the Kia’s greater overall exterior footprint.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 Kia Sorento Plug-In Hybrid
The Kia Sorento PHEV wins due to its 30-mile electric range capability and superior combined 33 MPG rating versus the Mercedes GLB's standard fuel economy.
2026 Mercedes-Benz GLB
The 2026 Mercedes-Benz GLB offers 22.0 cu ft of cargo capacity, substantially exceeding the Kia Sorento's 12.6 cu ft, which is critical for family hauling.
2025 Kia Sorento Plug-In Hybrid
The Kia Sorento PHEV provides 261 hp and standard All-Wheel Drive, offering more power and better traction than the 221 hp FWD Mercedes GLB.
2026 Mercedes-Benz GLB
The Mercedes GLB has a lower entry price of $43,800 and avoids the required premium fuel, making its operational costs potentially lower despite the lower MPG rating.
Choose the Kia Sorento Plug-In Hybrid if...
- You prioritize higher power output, as the Sorento PHEV produces 261 hp compared to the GLB's 221 hp.
- You seek the efficiency benefits of electrification, evidenced by the 30-mile electric-only range.
- Standard All-Wheel Drive capability is necessary for your driving conditions.
Choose the Mercedes-Benz GLB if...
- A lower initial investment is a priority, given the Sorento PHEV is $4,190 more expensive at $47,990 MSRP.
- Maximum raw cargo utility is needed, as the GLB provides 22.0 cu ft versus 12.6 cu ft.
- You prefer an 8-speed automated manual transmission over the Sorento's 6-speed unit.
Key Dimensions
| Dimension | Kia Sorento Plug-In Hybrid | Mercedes-Benz GLB |
|---|---|---|
| Length | 189.6" | 182.4" |
| Width | 74.8" | 72.2" |
| Height | 66.9" | 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) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Brake Drying | — | ✓ |
| Rear Solid Disc Brakes | — | ✓ |
| Brake Preparation System | — | ✓ |
| Rear Center 3-Point Seatbelt | — | ✓ |
Engine
| Feature | Kia | Mercedes-Benz |
|---|---|---|
| Base Engine Displacement | 1.6 L | 2.0 L |
| Number of Cylinders | inline 4 | inline 4 |
| Base Engine Type | plug-in hybrid | mild hybrid |
| Horsepower | 261 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 | all wheel drive | front wheel drive |
| Center Differential Type | Limited Slip | — |
| Hill Descent Control | ✓ | — |
Fuel
| Feature | Kia | Mercedes-Benz |
|---|---|---|
| Fuel Type | regular unleaded | premium unleaded (required) |
| EPA Fuel Economy (City/Highway) | 33/34 MPG | 25/33 MPG |
| EPA Fuel Economy (Combined) | 33 MPG | 28 MPG |
| EPA Driving Range (City/Highway) | 409.2/421.6 mi. | 397.5/524.7 mi. |
| EPA Efficiency (City/Highway MPGe) | 77/71 MPGe | — |
| EPA Efficiency (Combined MPGe) | 74 MPGe | — |
| EPA Electric Driving Range | 30 mi. | — |
| EPA Energy Consumption (kWh/100 mi) | 45 | — |
| Charging Time (240V) | 3.4 hr. | — |
| Fuel Tank Capacity | 12.4 gal. | 15.9 gal. |
| DC Fast Charging Port Type | SAE J1772 | — |
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 | ✓ | ✓ |
| 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 | — | ✓ |
| Overhead Console with Storage | — | ✓ |
| 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 | ✓ | ✓ |
| Manual Folding Third Row Seat | ✓ | — |
| Split-Folding Rear Seatback | — | ✓ |
| Folding Center Armrest | — | ✓ |
Tires and Wheels
| Feature | Kia | Mercedes-Benz |
|---|---|---|
| Wheel Finish | Painted Alloy | — |
| Wheel Size | 19 x 7.5 in | 18 x 7.5 in |
| Tire Type | All Season | — |
| Tire Size | 235/55R19 | 235/55R18 |
| Spare Tire Type | Temporary | — |
| Spare Tire Location | Inside Mounted | — |
| Wheel Material | — | Alloy |
| 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 Plug-In Hybrid and 2026 Mercedes-Benz GLB.
Does the Mercedes GLB require premium fuel?
Yes, the 2026 Mercedes-Benz GLB specification sheet explicitly states it requires premium unleaded fuel. This contrasts with the Kia Sorento PHEV, which uses regular unleaded.
How much more powerful is the Kia Sorento PHEV than the Mercedes GLB?
The Kia Sorento PHEV has 261 horsepower, giving it a 40 hp advantage over the 2026 Mercedes-Benz GLB, which generates 221 horsepower.
Which vehicle offers better day-to-day efficiency for short trips?
The Kia Sorento PHEV is superior for short, repeatable trips because it can travel up to 30 miles purely on electricity before engaging the hybrid powertrain for better overall efficiency.
What is the primary trade-off regarding interior space?
The Mercedes GLB wins on usable storage, offering 22.0 cu ft of cargo space compared to the Kia Sorento's 12.6 cu ft, despite the Kia being 7.2 inches longer overall.
What is the difference in drivetrain and transmission?
The Kia Sorento PHEV comes standard with All-Wheel Drive and a 6-speed shiftable automatic, whereas the Mercedes GLB uses Front Wheel Drive paired with an 8-speed automated manual transmission.
Is the higher price of the Kia justified by its efficiency gains?
The Kia costs $4,190 more, but compensates with a higher combined MPG rating of 33 versus the GLB's 28 MPG, though owners must also account for the cost difference between regular and premium fuel.
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