2026 Cadillac XT5 vs 2026 Mercedes-Benz GLB

$44,300 · Crossover

$43,800 · Crossover

Comparison Overview

The 2026 Cadillac XT5 bursts onto the scene offering more traditional American power with 235 hp from its standard engine, projecting an image of effortless cruising, despite its slightly thirstier 24 combined MPG. Conversely, the 2026 Mercedes-Benz GLB immediately grabs attention with its superior efficiency, boasting 28 combined MPG and an impressive 33 MPG highway, translating to fewer stops at the pump. The Cadillac provides greater utility with 30 cu ft of cargo space compared to the GLB's 22 cu ft. Performance-wise, the XT5 edges out its German rival with 258 lb-ft of torque versus the GLB's identical torque figure but slightly lower 221 hp output. Priced closely, the Cadillac starts at $44,300, slightly more expensive than the GLB's $43,800 entry point, making efficiency and space the core battlegrounds for these stylish crossovers.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz GLB

The GLB wins for commuters due to its significantly better fuel economy, achieving 28 combined MPG versus the XT5's 24 MPG.

👨‍👩‍👧‍👦 Best for Families

2026 Cadillac XT5

The Cadillac XT5 is superior for families, offering substantially more cargo capacity at 30 cubic feet compared to the GLB's 22 cubic feet.

🏎️ Best for Enthusiasts

2026 Cadillac XT5

The XT5 appeals more to enthusiasts with a higher horsepower rating of 235 hp compared to the GLB's 221 hp.

💰 Best Value

2026 Mercedes-Benz GLB

The GLB offers superior efficiency and a slightly lower starting MSRP of $43,800, giving it a slight edge in overall financial value.

Choose the Cadillac XT5 if...

You prioritize maximum hauling capability and need 30 cu ft of cargo space.
You prefer a bit more raw horsepower, leveraging the XT5's 235 hp output.
You value the slightly higher highway fuel economy rating of 29 MPG even if the combined MPG is lower.

Choose the Mercedes-Benz GLB if...

Excellent fuel economy is paramount, highlighted by the GLB's 28 combined MPG.
You are looking for the lower entry price point, starting at $43,800.
You prefer the compactness of the GLB at 182.4 inches in length for easier city maneuvering.

Key Dimensions

Dimension	Cadillac XT5	Mercedes-Benz GLB
Length	189.6"	182.4"
Width	74.9"	72.2"
Height	66.1"	66.7"
Wheelbase	112.0"	111.4"

Features Comparison

Safety

Feature	Cadillac	Mercedes-Benz
Lane Departure Warning	✓	—
Lane Keeping Assist System	✓	—
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 Ventilated Disc Brakes	✓	—
Brake Preparation System	✓	✓
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Cornering Lights	✓	—
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Height Adjustable Headrests	✓	✓
Rear Headrests	2	3
Rear Center 3-Point Seatbelt	✓	✓
Engine Immobilizer	✓	✓
Blind Spot Monitor	—	✓
Driver Attention Alert	—	✓
Brake Drying	—	✓
Rear Solid Disc Brakes	—	✓
Front Fog Lights	—	✓
Rear Height Adjustable Headrests	—	✓
Anti-Theft Alarm System (Remote)	—	✓

Engine

Feature	Cadillac	Mercedes-Benz
Base Engine Displacement	2.0 L	2.0 L
Number of Cylinders	inline 4	inline 4
Base Engine Type	gas	mild hybrid
Horsepower	235 hp @ 5000 rpm	221 hp @ 5500 rpm
Torque	258 lb-ft @ 1500 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	✓	✓
Cylinder Deactivation	✓	—

Drive Train

Feature	Cadillac	Mercedes-Benz
Transmission Type	9-speed shiftable automatic	8-speed automated manual
Drivetrain Type	front wheel drive	front wheel drive

Fuel

Feature	Cadillac	Mercedes-Benz
Fuel Type	premium unleaded (recommended)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	22/29 MPG	25/33 MPG
EPA Fuel Economy (Combined)	24 MPG	28 MPG
EPA Driving Range (City/Highway)	418.0/551.0 mi.	397.5/524.7 mi.
Fuel Tank Capacity	19.0 gal.	15.9 gal.

Comfort & Convenience

Feature	Cadillac	Mercedes-Benz
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	✓	✓
Cruise Control	✓	✓
Universal Remote Transmitter	✓	—
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Leatherette Steering Wheel	✓	—
Dual Zone Climate Control	✓	✓
Rear Ventilation Ducts	✓	✓
Interior Air Filtration	✓	✓
Sun Sensor	✓	—
Dual Vanity Mirrors	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Driver Assisted Parking Assist	—	✓
Overhead Console with Storage	—	✓
Leather Steering Wheel	—	✓
Auto-Dimming Rearview Mirror	—	✓

In Car Entertainment

Feature	Cadillac	Mercedes-Benz
Infotainment Display	8.0 in	10.25 in
AM/FM Stereo	✓	✓
Premium Speaker Brand	Bose	—
Speaker System	8	—
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	Cadillac	Mercedes-Benz
One-Touch Power Windows	4	4
Keyless Entry	✓	—
Heated Mirrors	✓	✓
Remote Keyless Entry	—	✓

Frontseats

Feature	Cadillac	Mercedes-Benz
Front Head Room	39.7 in.	40.7 in.
Front Leg Room	41.2 in.	41.1 in.
Front Shoulder Room	58.3 in.	55.9 in.
Front Hip Room	56.1 in.	—
Seat Material: Leatherette	✓	✓
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Passenger Seat Power Adjustments	6-way	8-way
Passenger Seat Manual Adjustments	2-way	—
Passenger Seat Height Adjustment	✓	✓
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Lumbar Support	—	Power
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	Cadillac	Mercedes-Benz
Rear Head Room	38.4 in.	39.3 in.
Rear Leg Room	39.0 in.	38.1 in.
Rear Shoulder Room	56.3 in.	54.9 in.
Rear Hip Room	54.8 in.	—
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	✓

Tires and Wheels

Feature	Cadillac	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Diameter	18 in	—
Tire Type	All Season	—
Tire Size	P235/65R	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	Cadillac	Mercedes-Benz
Four-Wheel Independent Suspension	✓	✓
Front Stabilizer Bar	✓	✓
Rear Stabilizer Bar	✓	✓

Warranty

Feature	Cadillac	Mercedes-Benz
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	6 yr./ 70000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Roadside Assistance	6 yr./ 70000 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 2026 Cadillac XT5 and 2026 Mercedes-Benz GLB.

How much does the difference in MPG affect long-term running costs?

The Mercedes-Benz GLB has a significant advantage, offering 28 combined MPG versus the Cadillac XT5's 24 combined MPG, which equates to about 16% better fuel efficiency for the GLB.

Which vehicle has a more usable powertrain for passing on the highway?

The Cadillac XT5 has a slight edge in peak power, producing 235 hp, while both vehicles share an identical torque rating of 258 lb-ft.

Is the difference in size significant between the two crossovers?

Yes, the XT5 is noticeably longer at 189.6 inches compared to the GLB's 182.4 inches, and this contributes directly to the 8 cubic feet difference in cargo space.

What is the trade-off between the transmissions?

The XT5 utilizes a traditional 9-speed shiftable automatic offering smoother potential gear transitions, whereas the GLB uses an 8-speed automated manual transmission.

Do both vehicles require premium fuel?

Yes, both the 2026 Cadillac XT5 and the 2026 Mercedes-Benz GLB specify premium unleaded fuel for optimal performance, although the Cadillac lists it as recommended while the Mercedes requires it.