2025 Cadillac XT6 vs 2026 Mercedes-Benz GLA
Comparison Overview
Deciding between the luxurious feel of a Cadillac and the efficiency of a compact Mercedes is a classic crossover dilemma. The 2025 Cadillac XT6 starts significantly higher at $49,195 compared to the 2026 Mercedes-Benz GLA’s $41,500, immediately creating a gap of $7,695 in entry price. While the XT6 offers more presence at 198.5 inches long, the smaller GLA counters with superior frugality, boasting a 29 MPG combined rating versus the XT6’s 23 MPG combined. Even though the XT6 has slightly more power with 235 hp versus the GLA’s 221 hp, the efficiency difference is stark; the GLA achieves 34 MPG highway while the XT6 only manages 27 MPG highway, making long commutes more costly in the Caddy. Furthermore, the XT6 has less usable cargo space at 12.6 cu ft compared to the GLA's 15.4 cu ft, a surprising metric given its larger footprint.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2026 Mercedes-Benz GLA
The 2026 Mercedes-Benz GLA wins for commuters due to its excellent 29 MPG combined fuel economy.
2025 Cadillac XT6
The larger 2025 Cadillac XT6, being 198.5 inches long, is generally better suited for family hauling needs despite slightly less inherent cargo volume.
2025 Cadillac XT6
The 2025 Cadillac XT6 takes the enthusiast edge with a small advantage in peak output, delivering 235 hp compared to the GLA's 221 hp.
2026 Mercedes-Benz GLA
The 2026 Mercedes-Benz GLA offers much better value by saving the buyer $7,695 upfront and yielding 6 MPG better combined efficiency.
Choose the Cadillac XT6 if...
- You prefer the slightly stronger performance numbers, hitting 235 hp versus the competitor's 221 hp.
- You prioritize the larger, traditional three-row crossover dimensions (198.5 inches long).
- You are willing to pay the $49,195 MSRP for the Cadillac badge and larger vehicle presence.
Choose the Mercedes-Benz GLA if...
- Saving money is crucial, as the GLA undercuts the XT6's MSRP by $7,695.
- You value fuel savings, benefiting from 29 MPG combined fuel economy over the XT6's 23 MPG.
- You need more efficient packing space, as the GLA offers 15.4 cu ft of cargo capacity versus the XT6's 12.6 cu ft.
Key Dimensions
| Dimension | Cadillac XT6 | Mercedes-Benz GLA |
|---|---|---|
| Length | 198.5" | 173.6" |
| Width | 77.3" | 72.2" |
| Height | 69.9" | 63.5" |
| Wheelbase | 113.0" | 107.4" |
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 |
| 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 | ✓ | ✓ |
| Driver Attention Alert | — | ✓ |
| Brake Drying | — | ✓ |
| 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) | 21/27 MPG | 26/34 MPG |
| EPA Fuel Economy (Combined) | 23 MPG | 29 MPG |
| EPA Driving Range (City/Highway) | 399.0/513.0 mi. | 351.0/459.0 mi. |
| Fuel Tank Capacity | 19.0 gal. | 13.5 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 | ✓ | ✓ |
| 3rd Row Cupholders | ✓ | — |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Front Seatback Storage | ✓ | ✓ |
| Power Rear Seat Easy Entry | ✓ | — |
| Leather Steering Wheel | ✓ | ✓ |
| Three 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 | ✓ | ✓ |
| Driver Assisted Parking Assist | — | ✓ |
| Dual Zone Climate Control | — | ✓ |
| Rear Ventilation Ducts | — | ✓ |
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 |
| Moonroof Type | 1st Row Power Glass Extended | — |
| Keyless Entry | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
| Remote Keyless Entry | — | ✓ |
Frontseats
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Front Head Room | 39.8 in. | 39.0 in. |
| Front Leg Room | 41.2 in. | 41.0 in. |
| Front Shoulder Room | 58.3 in. | 55.9 in. |
| Front Hip Room | 50.1 in. | — |
| Seat Material: Leatherette | ✓ | ✓ |
| Front Seat Type: Bucket | ✓ | ✓ |
| Driver Seat Power Adjustments | 8-way | 8-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Memory Settings | 2 | 3 |
| Passenger Seat Power Adjustments | 6-way | 8-way |
| Passenger Seat Manual Adjustments | 2-way | — |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Heating | Multi-level | — |
| Passenger Seat Heating | Multi-level | — |
| Driver Seat Lumbar Support | — | Power |
| Driver Seat Thigh Extension | — | ✓ |
| Passenger Seat Lumbar Support | — | Power |
| Passenger Seat Thigh Extension | — | ✓ |
| Passenger Seat Memory Settings | — | 3 |
Rearseats
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Rear Head Room | 39.1 in. | 38.1 in. |
| Rear Leg Room | 39.1 in. | 38.0 in. |
| Rear Shoulder Room | 57.4 in. | 54.8 in. |
| Rear Hip Room | 55.7 in. | — |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Folding Center Armrest | ✓ | ✓ |
| Power Folding Third Row Seat | ✓ | — |
| Reclining Rear Seats | — | ✓ |
Tires and Wheels
| Feature | Cadillac | Mercedes-Benz |
|---|---|---|
| Wheel Finish | Painted Alloy | — |
| Wheel Diameter | 18 in | — |
| Tire Type | All Season | — |
| Tire Size | P235/65R | 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 2025 Cadillac XT6 and 2026 Mercedes-Benz GLA.
How much more expensive is the 2025 Cadillac XT6 than the 2026 Mercedes-Benz GLA?
The Cadillac XT6 has a notably higher starting MSRP of $49,195 compared to the Mercedes-Benz GLA's $41,500. This results in an upfront price difference of $7,695 favoring the GLA.
Is the larger Cadillac XT6 more fuel-efficient than the compact GLA?
No, quite the opposite. The 2026 Mercedes-Benz GLA is significantly more efficient, achieving 29 MPG combined, whereas the 2025 Cadillac XT6 only manages 23 MPG combined.
Do either of these vehicles require premium fuel?
Yes, both models specify premium unleaded fuel, though the Cadillac XT6 recommends it while the Mercedes-Benz GLA requires it for operation.
Which vehicle has better highway cruising economy for long trips?
The Mercedes-Benz GLA offers noticeably better highway economy, netting 34 MPG on the highway compared to the Cadillac XT6's 27 MPG highway rating.
Despite its smaller size, does the 2026 GLA offer less cargo room than the XT6?
Surprisingly, the smaller 2026 Mercedes-Benz GLA offers more cargo space with 15.4 cubic feet available behind the seats, exceeding the larger 2025 Cadillac XT6's 12.6 cubic feet.
How do their horsepower ratings compare?
The 2025 Cadillac XT6 holds a slight advantage with 235 horsepower, marginally exceeding the 2026 Mercedes-Benz GLA's output of 221 horsepower.
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