2025 Audi Q8 vs 2025 INFINITI QX55
Comparison Overview
The 2025 Audi Q8 unleashes potent performance, boasting 335 hp and a commanding presence that demands attention, while the 2025 INFINITI QX55 captivates with its swooping coupe-like profile and remarkable efficiency. The Q8’s $74,400 MSRP reflects its more substantial size (196.0 inches long) and power advantage over the QX55, which starts significantly lower at $50,150. Enthusiasts will immediately notice the 67 horsepower gap, as the Audi dishes out 369 lb-ft of torque compared to INFINITI's 280 lb-ft. However, the QX55 rewards long-distance travelers with a substantial 25 combined MPG, besting the Q8’s 19 combined MPG, a difference that highlights the cost of the Audi’s superior velocity and the necessity of its premium unleaded fuel. The difference in usable space is also clear: the Q8 offers 33.7 cu ft of cargo room versus the QX55's 26.9 cu ft.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 INFINITI QX55
The QX55 offers significantly better fuel economy at 25 combined MPG, making daily driving costs lower than the Q8's 19 combined MPG.
2025 Audi Q8
The Audi Q8 provides a superior 33.7 cu ft of cargo capacity compared to the QX55's 26.9 cu ft, offering more room for family gear.
2025 Audi Q8
The Q8 delivers undeniable performance excitement with 335 hp and 369 lb-ft of torque, vastly outclassing the QX55's 268 hp.
2025 INFINITI QX55
The QX55 is $24,250 less expensive while still delivering AWD capability and respectable power for its segment.
Choose the Audi Q8 if...
- You prioritize raw power, demanding the 335 hp and 369 lb-ft of torque from the standard Q8 engine.
- Maximum utility is necessary, benefiting from the larger 33.7 cu ft of cargo space.
- You appreciate the security and stability provided by its standard all-wheel drive coupled with an 8-speed shiftable automatic transmission.
Choose the INFINITI QX55 if...
- Saving money upfront is crucial, given the QX55's attractive $50,150 MSRP.
- Fuel efficiency is a high priority, as the QX55 achieves 25 combined MPG versus the Q8’s 19.
- You prefer a slightly smaller, potentially more agile footprint, measuring 186.3 inches in length compared to the Q8's 196.0 inches.
Key Dimensions
| Dimension | Audi Q8 | INFINITI QX55 |
|---|---|---|
| Length | 196.0" | 186.3" |
| Width | 79.0" | 74.9" |
| Height | 67.0" | 63.8" |
| Wheelbase | 118.0" | 110.2" |
Features Comparison
Safety
| Feature | Audi | INFINITI |
|---|---|---|
| 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 | ✓ | ✓ |
| Headlight Washers | ✓ | — |
| Integrated Turn Signal Mirrors | ✓ | ✓ |
| Front Headrests | 2 | 2 |
| Front Height Adjustable Headrests | ✓ | ✓ |
| Rear Headrests | 3 | 3 |
| Rear Height Adjustable Headrests | ✓ | ✓ |
| Rear Center 3-Point Seatbelt | ✓ | ✓ |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Front Fog Lights | — | ✓ |
Engine
| Feature | Audi | INFINITI |
|---|---|---|
| Base Engine Displacement | 3.0 L | 2.0 L |
| Number of Cylinders | V6 | inline 4 |
| Base Engine Type | mild hybrid | gas |
| Horsepower | 335 hp | 268 hp @ 5600 rpm |
| Torque | 369 lb-ft | 280 lb-ft @ 4800 rpm |
| Number of Valves | 24 | 16 |
| Camshaft Type | Double overhead cam (DOHC) | Double overhead cam (DOHC) |
| Variable Valve Timing | Variable | Variable |
| Fuel Injection Type | ✓ | ✓ |
Drive Train
| Feature | Audi | INFINITI |
|---|---|---|
| Transmission Type | 8-speed shiftable automatic | continuously variable-speed automatic |
| Drivetrain Type | all wheel drive | all wheel drive |
| Center Differential Type | Limited Slip | Limited Slip |
| Hill Descent Control | ✓ | — |
Fuel
| Feature | Audi | INFINITI |
|---|---|---|
| Fuel Type | premium unleaded (required) | premium unleaded (recommended) |
| EPA Fuel Economy (City/Highway) | 17/23 MPG | 22/28 MPG |
| EPA Fuel Economy (Combined) | 19 MPG | 25 MPG |
| EPA Driving Range (City/Highway) | 382.5/517.5 mi. | 352.0/448.0 mi. |
| Fuel Tank Capacity | 22.5 gal. | 16.0 gal. |
Comfort & Convenience
| Feature | Audi | INFINITI |
|---|---|---|
| Push Button Start | ✓ | ✓ |
| Power Tilt and Telescopic Steering Wheel | ✓ | ✓ |
| Transmission Controls on Steering Wheel | ✓ | ✓ |
| Audio Controls on Steering Wheel | ✓ | ✓ |
| Electric Power Steering | ✓ | ✓ |
| Rear View Camera | ✓ | ✓ |
| Front Parking Sensors | ✓ | — |
| Rear Parking Sensors with Side Sensing | ✓ | — |
| Adaptive Cruise Control | ✓ | ✓ |
| Universal Remote Transmitter | ✓ | ✓ |
| Front Cupholders | ✓ | ✓ |
| Rear Cupholders | ✓ | ✓ |
| Front Door Pockets | ✓ | ✓ |
| Rear Door Pockets | ✓ | ✓ |
| Front Seatback Storage | ✓ | ✓ |
| Leather Steering Wheel | ✓ | ✓ |
| Three Zone Climate Control | ✓ | — |
| Rear Ventilation Ducts with Fan Control | ✓ | — |
| Interior Air Filtration | ✓ | — |
| Dual Vanity Mirrors | ✓ | ✓ |
| Auto-Dimming Rearview Mirror | ✓ | ✓ |
| Turn Signal Indicators in Mirrors | ✓ | ✓ |
| Cruise Control on Steering Wheel | — | ✓ |
| Rear Parking Sensors | — | ✓ |
| Wireless Charging Pad | — | ✓ |
| Dual Zone Climate Control | — | ✓ |
| Rear Ventilation Ducts | — | ✓ |
In Car Entertainment
| Feature | Audi | INFINITI |
|---|---|---|
| Infotainment Display | 10.1 in | 8.0 in |
| AM/FM Stereo | ✓ | ✓ |
| Stereo Power | 180W | — |
| Speaker System | 10 | 6 |
| Android Auto (Wireless) | ✓ | — |
| Apple CarPlay (Wireless) | ✓ | — |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 3 months | 3 months |
| Speed Sensitive Volume Control | ✓ | — |
| Android Auto (Wired) | — | ✓ |
| Apple CarPlay (Wired) | — | ✓ |
Power Feature
| Feature | Audi | INFINITI |
|---|---|---|
| One-Touch Power Windows | 4 | 4 |
| Moonroof Type | 1st Row Power Glass Extended | 1st Row Power Glass |
| Keyless Entry | ✓ | ✓ |
| Heated Mirrors | ✓ | ✓ |
| Reverse Tilt Dual Mirrors | — | ✓ |
Frontseats
| Feature | Audi | INFINITI |
|---|---|---|
| Front Head Room | 37.1 in. | 39.9 in. |
| Front Leg Room | 41.6 in. | 39.6 in. |
| Front Shoulder Room | 59.5 in. | 57.9 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 | 2 |
| 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 |
| Front Hip Room | — | 55.6 in. |
Rearseats
| Feature | Audi | INFINITI |
|---|---|---|
| Rear Head Room | 38.1 in. | 36.9 in. |
| Rear Leg Room | 40.2 in. | 38.7 in. |
| Rear Shoulder Room | 58.5 in. | 57.1 in. |
| Split-Folding Rear Seatback | ✓ | ✓ |
| Reclining Rear Seats | ✓ | ✓ |
| Folding Center Armrest | ✓ | ✓ |
| Rear Hip Room | — | 53.8 in. |
Tires and Wheels
| Feature | Audi | INFINITI |
|---|---|---|
| Wheel Finish | Painted Alloy | Painted Alloy |
| Wheel Size | 21 in | — |
| Tire Type | All Season | — |
| Tire Size | 285/45R21 | 255/45R20 |
| Spare Tire Type | Temporary | — |
| Spare Tire Location | Inside Mounted | — |
| Wheel Diameter | — | 20 in. |
| Run Flat Tires | — | ✓ |
Suspension
| Feature | Audi | INFINITI |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | Audi | INFINITI |
|---|---|---|
| Basic Warranty | 4 yr./ 50000 mi. | 4 yr./ 60000 mi. |
| Drivetrain Warranty | 4 yr./ 50000 mi. | 6 yr./ 70000 mi. |
| Corrosion/Rust Warranty | 12 yr./ unlimited mi. | 7 yr./ unlimited mi. |
| Roadside Assistance | 4 yr./ unlimited mi. | 4 yr./ 60000 mi. |
| Complimentary Scheduled Maintenance | — | 3 yr./ 22500 mi. |
Frequently Asked Questions
Common questions about comparing the 2025 Audi Q8 and 2025 INFINITI QX55.
What is the financial difference between these two crossovers?
There is a substantial $24,250 price gap between the two vehicles, with the 2025 Audi Q8 starting at $74,400 and the 2025 INFINITI QX55 beginning at $50,150.
How significant is the performance disparity when comparing horsepower?
The Audi Q8 is significantly more powerful, delivering 335 hp, which is a 67 hp advantage over the QX55’s 268 hp output.
Which vehicle is more economical for weekly commuting?
The QX55 is the clear winner for efficiency, managing 25 combined MPG (22 city/28 highway), while the Q8 is rated for only 19 combined MPG (17 city/23 highway).
Do both vehicles use premium fuel?
Yes, both require premium unleaded gasoline, though the Q8 mandates it while the QX55 only recommends it for its best performance.
How much more interior space does the Q8 offer over the QX55?
The Q8 provides more utility with 33.7 cu ft of cargo capacity, which is notably greater than the QX55’s 26.9 cu ft cargo volume.
Are the transmissions fundamentally different between the Q8 and QX55?
Yes, the Q8 utilizes a conventional 8-speed shiftable automatic transmission, whereas the QX55 employs a continuously variable-speed automatic (CVT).
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