2025 INFINITI QX55 vs 2026 Chevrolet Suburban
Comparison Overview
The 2025 INFINITI QX55 bursts onto the scene with coupe-like flair, offering an energetic 268 hp in a nimble package that achieves 25 MPG combined. Contrasting this spirited crossover, the 2026 Chevrolet Suburban looms large, boasting a massive 41.5 cu ft of cargo space and a powerhouse 355 hp. The Suburban justifies its higher MSRP of $63,400 with sheer scale and torque (383 lb-ft), though its 17 MPG combined efficiency is substantially lower than the QX55’s 28 MPG highway rating. While the QX55 is $13,250 more affordable, the Suburban delivers 87 more horsepower for drivers prioritizing brute force. This comparison pits style and efficiency against ultimate utility and sheer towing potential, highlighted by their 8 MPG efficiency gap.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 INFINITI QX55
The QX55 wins for commuters due to its superior 25 MPG combined fuel economy compared to the Suburban's 17 MPG.
2026 Chevrolet Suburban
The 2026 Suburban offers immense utility with 41.5 cu ft of cargo capacity, vastly outweighing the QX55's 26.9 cu ft.
2026 Chevrolet Suburban
The Suburban appeals more to enthusiasts craving power, delivering 355 hp and 383 lb-ft of torque versus the QX55's 268 hp.
2025 INFINITI QX55
The QX55 presents better value by saving the buyer $13,250 MSRP while still offering AWD capability.
Choose the INFINITI QX55 if...
- Fuel efficiency is paramount, as the QX55 achieves 28 MPG on the highway.
- You prefer a vehicle with a lower initial cost, sporting an MSRP of $50,150.
- You desire the handling benefits of an All-Wheel Drive system paired with a more compact footprint (186.3 inches long).
Choose the Chevrolet Suburban if...
- Maximum cargo volume is required, as the Suburban offers 41.5 cu ft.
- You need the brute force provided by 355 horsepower and 383 lb-ft of torque.
- Hauling capability matters most, making the RWD layout and robust engine a priority over its 15 MPG city rating.
Key Dimensions
| Dimension | INFINITI QX55 | Chevrolet Suburban |
|---|---|---|
| Length | 186.3" | 226.3" |
| Width | 74.9" | 81.1" |
| Height | 63.8" | 75.6" |
| Wheelbase | 110.2" | 134.1" |
Features Comparison
Safety
| Feature | INFINITI | Chevrolet |
|---|---|---|
| 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 | ✓ | ✓ |
| Dual Rear 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 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 | 3 | 2 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Third Row Head Airbags | — | ✓ |
Engine
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Base Engine Displacement | 2.0 L | 5.3 L |
| Number of Cylinders | inline 4 | V8 |
| Base Engine Type | gas | gas |
| Horsepower | 268 hp @ 5600 rpm | 355 hp @ 5600 rpm |
| Torque | 280 lb-ft @ 4800 rpm | 383 lb-ft @ 4100 rpm |
| Number of Valves | 16 | 16 |
| Camshaft Type | Double overhead cam (DOHC) | Overhead valves (OHV) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | ✓ |
| Cylinder Deactivation | — | ✓ |
Drive Train
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Transmission Type | continuously variable-speed automatic | 10-speed shiftable automatic |
| Drivetrain Type | all wheel drive | rear wheel drive |
| Center Differential Type | Limited Slip | — |
| Rear Differential Type | — | Limited Slip |
Fuel
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Fuel Type | premium unleaded (recommended) | regular unleaded |
| EPA Fuel Economy (City/Highway) | 22/28 MPG | 15/20 MPG |
| EPA Fuel Economy (Combined) | 25 MPG | 17 MPG |
| EPA Driving Range (City/Highway) | 352.0/448.0 mi. | 420.0/560.0 mi. |
| Fuel Tank Capacity | 16.0 gal. | 28.0 gal. |
Comfort & Convenience
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Power 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 | ✓ | ✓ |
| Rear Parking Sensors | ✓ | ✓ |
| Wireless Charging Pad | ✓ | — |
| Adaptive Cruise Control | ✓ | ✓ |
| Universal Remote Transmitter | ✓ | — |
| Front Cupholders | ✓ | ✓ |
| Rear Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Front Seatback Storage | ✓ | ✓ |
| Leather Steering Wheel | ✓ | — |
| Dual Zone Climate Control | ✓ | — |
| Rear Ventilation Ducts | ✓ | — |
| Dual Vanity Mirrors | ✓ | ✓ |
| Auto-Dimming Rearview Mirror | ✓ | — |
| Turn Signal Indicators in Mirrors | ✓ | — |
| Tilt and Telescopic Steering Wheel | — | ✓ |
| Front View Camera | — | ✓ |
| Side View Camera | — | ✓ |
| Front Parking Sensors | — | ✓ |
| Automatic Parking Assist | — | ✓ |
| 3rd Row Cupholders | — | ✓ |
| Leatherette Steering Wheel | — | ✓ |
| Three Zone Climate Control | — | ✓ |
| Rear Ventilation Ducts with Fan Control | — | ✓ |
| Sun Sensor | — | ✓ |
In Car Entertainment
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Infotainment Display | 8.0 in | 17.7 in |
| AM/FM Stereo | ✓ | ✓ |
| Speaker System | 6 | 6 |
| Android Auto (Wired) | ✓ | — |
| Apple CarPlay (Wired) | ✓ | — |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 3 months | — |
| Android Auto (Wireless) | — | ✓ |
| Apple CarPlay (Wireless) | — | ✓ |
| Auxiliary Audio Input | — | ✓ |
| Speed Sensitive Volume Control | — | ✓ |
Power Feature
| Feature | INFINITI | Chevrolet |
|---|---|---|
| One-Touch Power Windows | 4 | 4 |
| Moonroof Type | 1st Row Power Glass | — |
| Keyless Entry | ✓ | ✓ |
| Reverse Tilt Dual Mirrors | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
Frontseats
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Front Head Room | 39.9 in. | 42.3 in. |
| Front Leg Room | 39.6 in. | 44.5 in. |
| Front Shoulder Room | 57.9 in. | 65.6 in. |
| Front Hip Room | 55.6 in. | 61.5 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 | — |
| Passenger Seat Power Adjustments | 8-way | 6-way |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Heating | Multi-level | — |
| Passenger Seat Heating | Multi-level | — |
| Seat Material: Premium Cloth | — | ✓ |
| Passenger Seat Lumbar Support | — | Power |
Rearseats
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Rear Head Room | 36.9 in. | 38.9 in. |
| Rear Leg Room | 38.7 in. | 42.0 in. |
| Rear Shoulder Room | 57.1 in. | 64.6 in. |
| Rear Hip Room | 53.8 in. | 61.3 in. |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Reclining Rear Seats | ✓ | — |
| Folding Center Armrest | ✓ | ✓ |
| Manual Folding Third Row Seat | — | ✓ |
Tires and Wheels
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Wheel Finish | Painted Alloy | Painted Alloy |
| Wheel Diameter | 20 in. | — |
| Tire Size | 255/45R20 | 265/65R18 |
| Run Flat Tires | ✓ | — |
| Wheel Size | — | 18 x 8.5 in |
| Tire Type | — | All Season |
| Spare Tire Type | — | Full Size Non-Matching |
| Spare Tire Location | — | Underbody Mounted |
Suspension
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | INFINITI | Chevrolet |
|---|---|---|
| Basic Warranty | 4 yr./ 60000 mi. | 3 yr./ 36000 mi. |
| Drivetrain Warranty | 6 yr./ 70000 mi. | 5 yr./ 60000 mi. |
| Corrosion/Rust Warranty | 7 yr./ unlimited mi. | 6 yr./ 100000 mi. |
| Roadside Assistance | 4 yr./ 60000 mi. | 5 yr./ 60000 mi. |
| Complimentary Scheduled Maintenance | 3 yr./ 22500 mi. | 1 yr./ unlimited mi. |
Frequently Asked Questions
Common questions about comparing the 2025 INFINITI QX55 and 2026 Chevrolet Suburban.
How much larger is the 2026 Chevrolet Suburban than the 2025 INFINITI QX55?
The Suburban is substantially larger, measuring 226.3 inches in length compared to the QX55's 186.3 inches. This extra length translates directly into a significantly greater capacity of 41.5 cu ft for cargo versus the QX55's 26.9 cu ft.
Is the fuel economy difference between these two vehicles significant?
Yes, the difference is quite noticeable; the QX55 averages 25 MPG combined, while the massive Suburban only achieves 17 MPG combined. That is an 8 MPG advantage for the smaller QX55.
Which vehicle offers better straight-line performance based on the specs provided?
The 2026 Suburban is the clear winner in raw power, boasting 355 hp and 383 lb-ft of torque. The QX55 produces a respectable 268 hp, but trails the Suburban by 87 horsepower.
What is the price gap between the base models of these two vehicles?
There is a $13,250 difference in the Manufacturer's Suggested Retail Price (MSRP). The QX55 starts at $50,150, whereas the Suburban begins at $63,400.
Why does the Suburban use Regular Unleaded fuel while the QX55 recommends Premium?
The Suburban, utilizing a larger displacement engine, is tuned for less volatile regular unleaded fuel to handle its high torque output of 383 lb-ft. The QX55's recommendation for premium unleaded is common for high-compression turbocharged engines seeking maximum efficiency and performance from its 268 hp output.
How do the transmissions compare in terms of speed and operation?
The QX55 uses a continuously variable-speed automatic transmission designed for smooth, seamless power delivery. In contrast, the Suburban employs a 10-speed shiftable automatic, offering more traditional gear steps for performance engagement.
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