2025 Cadillac XT4 vs 2026 Mercedes-Benz GLB
Comparison Overview
Choosing between the 2025 Cadillac XT4 and the 2026 Mercedes-Benz GLB often boils down to balancing initial cost against perceived brand prestige and slightly better efficiency. The XT4 hits the pavement with a slightly higher MSRP starting point of $40,795 compared to the GLB's $43,800, yet offers a slight power advantage with 235 hp versus the GLB's 221 hp. Despite being slightly smaller overall in length (180.1 inches vs 182.4 inches), the XT4 provides marginally more utility with 22.5 cu ft of cargo space compared to the GLB's 22.0 cu ft. While the GLB wins on fuel economy, achieving 28 combined MPG against the XT4’s 26 combined MPG, both require premium fuel. This decision hinges on whether you prioritize the Cadillac's accessible performance or the Mercedes-Benz's thriftier highway cruising on your daily commute.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2026 Mercedes-Benz GLB
The Mercedes-Benz GLB wins for commuters due to its superior fuel economy, achieving 33 highway MPG versus the XT4's 29 MPG.
2025 Cadillac XT4
The Cadillac XT4 is slightly better equipped for hauling gear due to its marginally larger 22.5 cubic feet of cargo capacity.
2025 Cadillac XT4
The XT4 offers more raw output with 235 horsepower compared to the GLB's 221 horsepower.
2025 Cadillac XT4
The Cadillac XT4 wins on initial outlay, being $3,005 cheaper than the Mercedes-Benz GLB.
Choose the Cadillac XT4 if...
- You want a lower entry price point, as the XT4 MSRP is $40,795 versus the GLB's $43,800.
- You prefer a bit more power delivered by the 235 hp engine, surpassing the GLB's 221 hp.
- You value slightly better utility space, with 22.5 cu ft of cargo capacity available.
Choose the Mercedes-Benz GLB if...
- Fuel efficiency is paramount, as the GLB delivers 28 combined MPG compared to the XT4's 26 combined MPG.
- You prefer a taller stance and a wider vehicle, as the GLB stands 66.7 inches tall.
- You want the best highway mileage, where the GLB achieves 33 MPG.
Key Dimensions
| Dimension | Cadillac XT4 | Mercedes-Benz GLB |
|---|---|---|
| Length | 180.1" | 182.4" |
| Width | 76.7" | 72.2" |
| Height | 64.1" | 66.7" |
| Wheelbase | 109.0" | 111.4" |
Features Comparison
Safety
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Blind Spot Monitor | ✓ | ✓ |
| Lane Departure Warning | ✓ | — |
| Lane Keeping Assist System | ✓ | — |
| Rear Cross Traffic Alert | ✓ | — |
| 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 |
| Brake Drying | ✓ | ✓ |
| Front Ventilated Disc Brakes | ✓ | ✓ |
| Rear Ventilated Disc Brakes | ✓ | — |
| Brake Assist | ✓ | ✓ |
| Tire Pressure Monitoring System | ✓ | ✓ |
| Automatic Headlights | ✓ | ✓ |
| Headlight Delay-Off | ✓ | ✓ |
| LED Headlights | ✓ | ✓ |
| Daytime Running Lights | ✓ | ✓ |
| Integrated Turn Signal Mirrors | ✓ | ✓ |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | ✓ |
| Rear Headrests | 2 | 3 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Driver Attention Alert | — | ✓ |
| Rear Solid Disc Brakes | — | ✓ |
| Brake Preparation System | — | ✓ |
| Front Fog Lights | — | ✓ |
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) | 24/29 MPG | 25/33 MPG |
| EPA Fuel Economy (Combined) | 26 MPG | 28 MPG |
| EPA Driving Range (City/Highway) | 381.6/461.1 mi. | 397.5/524.7 mi. |
| Fuel Tank Capacity | 15.9 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 | ✓ | ✓ |
| Front View Camera | ✓ | — |
| Side View Camera | ✓ | — |
| Rear View Camera | ✓ | ✓ |
| Rear Parking Sensors | ✓ | ✓ |
| Adaptive Cruise Control | ✓ | — |
| Universal Remote Transmitter | ✓ | — |
| Front Cupholders | ✓ | ✓ |
| Rear Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Overhead Console with Storage | ✓ | ✓ |
| Front Seatback Storage | ✓ | ✓ |
| Dual Zone Climate Control | ✓ | ✓ |
| Rear Ventilation Ducts with Fan Control | ✓ | — |
| Interior Air Filtration | ✓ | ✓ |
| Sun Sensor | ✓ | — |
| Dual Vanity Mirrors | ✓ | ✓ |
| Auto-Dimming Rearview Mirror | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | ✓ |
| Front Parking Sensors | — | ✓ |
| Driver Assisted Parking Assist | — | ✓ |
| Cruise Control | — | ✓ |
| Rear Door Pockets | — | ✓ |
| Leather Steering Wheel | — | ✓ |
| Rear Ventilation Ducts | — | ✓ |
In Car Entertainment
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Infotainment Display | 33.0 in | 10.25 in |
| AM/FM Stereo | ✓ | ✓ |
| Speaker System | 7 | — |
| Android Auto (Wireless) | ✓ | ✓ |
| Apple CarPlay (Wireless) | ✓ | ✓ |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | — | 6 months |
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 | 39.4 in. | 40.7 in. |
| Front Leg Room | 44.1 in. | 41.1 in. |
| Front Shoulder Room | 57.0 in. | 55.9 in. |
| Front Hip Room | 54.5 in. | — |
| Seat Material: Leather | ✓ | — |
| Front Seat Type: Bucket | ✓ | ✓ |
| Driver Seat Power Adjustments | 8-way | 8-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | Power |
| Driver Seat Memory Settings | 2 | 3 |
| Passenger Seat Power Adjustments | 6-way | 8-way |
| Passenger Seat Manual Adjustments | 2-way | — |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | Power |
| Seat Material: Leatherette | — | ✓ |
| Driver Seat Thigh Extension | — | ✓ |
| Passenger Seat Thigh Extension | — | ✓ |
| Passenger Seat Memory Settings | — | 3 |
| Driver Seat Heating | — | Multi-level |
| Passenger Seat Heating | — | Multi-level |
Rearseats
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Rear Head Room | 38.3 in. | 39.3 in. |
| Rear Leg Room | 39.5 in. | 38.1 in. |
| Rear Shoulder Room | 55.1 in. | 54.9 in. |
| Rear Hip Room | 49.8 in. | — |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Folding Center Armrest | ✓ | ✓ |
| Reclining Rear Seats | — | ✓ |
Tires and Wheels
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Wheel Finish | Painted Alloy | — |
| Wheel Diameter | 18 in | — |
| Tire Type | All Season | — |
| Tire Size | P235/60R18 | 235/55R18 |
| 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 2025 Cadillac XT4 and 2026 Mercedes-Benz GLB.
Which crossover is more expensive upfront?
The 2026 Mercedes-Benz GLB has a higher Manufacturer's Suggested Retail Price (MSRP) at $43,800. The 2025 Cadillac XT4 starts lower at $40,795, offering a $3,005 initial savings.
Does one car offer significantly more cargo room?
The difference is minor, but the Cadillac XT4 holds a slight edge, offering 22.5 cubic feet of cargo capacity. The Mercedes-Benz GLB provides 22.0 cubic feet behind the rear seats.
How do their engine performance stats compare?
The Cadillac XT4 has a slight advantage in peak output, producing 235 horsepower and 258 lb-ft of torque. The Mercedes-Benz GLB offers 221 horsepower with the same 258 lb-ft of torque.
Is there a noticeable difference in fuel economy?
Yes, the GLB is slightly more frugal overall, achieving 28 combined MPG (25 city/33 highway). The XT4 delivers 26 combined MPG (24 city/29 highway).
Do both luxury crossovers require the same grade of fuel?
Both models specify premium unleaded fuel, though the XT4 notes it as recommended while the GLB specifies it as required.
Which vehicle is physically larger?
The Mercedes-Benz GLB is slightly longer at 182.4 inches (vs. 180.1 for the XT4) and noticeably taller at 66.7 inches (vs. 64.1 for the XT4), though the XT4 is wider.
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