2026 Audi RS Q8 vs 2026 INFINITI QX80

$138,300 · Crossover

$83,750 · SUV

Comparison Overview

The most significant divergence between the 2026 Audi RS Q8 and the 2026 INFINITI QX80 is their MSRP, differing by $54,550, with the QX80 priced at $83,750 versus the RS Q8’s $138,300. Performance metrics also show a substantial gap; the Audi generates 631 hp and 627 lb-ft of torque, significantly outpacing the INFINITI's 450 hp and 516 lb-ft. Conversely, the QX80 offers a minor fuel economy edge, achieving 18 MPG combined compared to the Audi's 16 MPG combined. Dimensionally, the QX80 is substantially larger, measuring 211.2 inches long and 76.6 inches high, whereas the RS Q8 has a tighter footprint. Despite its higher cost, the Audi offers 33 cu ft of cargo space, substantially more than the QX80's 22 cu ft capacity.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 INFINITI QX80

The QX80 offers better city fuel economy at 16 MPG compared to the RS Q8's 14 MPG city rating.

👨‍👩‍👧‍👦 Best for Families

2026 Audi RS Q8

The Audi RS Q8 provides 33 cu ft of cargo capacity, which is 11 cubic feet more than the QX80's 22 cu ft.

🏎️ Best for Enthusiasts

2026 Audi RS Q8

The RS Q8 delivers 181 more horsepower (631 hp) and 111 lb-ft more torque (627 lb-ft) than the QX80.

💰 Best Value

2026 INFINITI QX80

The QX80 is priced $54,550 lower than the RS Q8 while still providing a robust 450 hp powertrain.

Choose the Audi RS Q8 if...

Maximum performance is prioritized, evidenced by the 631 hp and 627 lb-ft torque figures.
Superior hauling capacity is required, as the RS Q8 offers 33 cu ft of cargo space.
Standard all-wheel drive is preferred over the QX80's rear-wheel-drive setup.

Choose the INFINITI QX80 if...

A budget constraint exists, as the QX80 MSRP is $138,300 versus the Audi's $83,750.
Slightly better overall fuel efficiency is desired, netting 18 combined MPG.
The owner requires a physically larger vehicle with 211.2 inches of length and 76.6 inches of height.

Key Dimensions

Dimension	Audi RS Q8	INFINITI QX80
Length	197.7"	211.2"
Width	79.0"	83.3"
Height	67.5"	76.6"
Wheelbase	117.9"	121.1"

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
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 Integrated Headrests	✓	—
Rear Headrests	3	2
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Driver Attention Alert	—	✓
Third Row Head Airbags	—	✓
Front Ventilated Disc Brakes	—	✓
Rear Ventilated Disc Brakes	—	✓
Brake Preparation System	—	✓
Front Fog Lights	—	✓
Front Height Adjustable Headrests	—	✓

Engine

Feature	Audi	INFINITI
Base Engine Displacement	4.0 L	3.5 L
Number of Cylinders	V8	V6
Base Engine Type	mild hybrid	gas
Horsepower	631 hp @ 6000 rpm	450 hp @ 5600 rpm
Torque	627 lb-ft @ 2300 rpm	516 lb-ft @ 3600 rpm
Number of Valves	32	24
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	9-speed shiftable automatic
Drivetrain Type	all wheel drive	rear wheel drive
[object Object]	✓	—
[object Object]	✓	—
Hill Descent Control	✓	—

Fuel

Feature	Audi	INFINITI
Fuel Type	premium unleaded (required)	premium unleaded (recommended)
EPA Fuel Economy (City/Highway)	14/20 MPG	16/20 MPG
EPA Fuel Economy (Combined)	16 MPG	18 MPG
EPA Driving Range (City/Highway)	315.0/450.0 mi.	377.6/472.0 mi.
Fuel Tank Capacity	22.5 gal.	23.6 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	✓	✓
Front View Camera	✓	✓
Side View Camera	✓	✓
Rear View Camera	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors with Side Sensing	✓	—
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	✓	✓
Heated Steering Wheel	✓	✓
Four 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	—	✓
3rd Row Cupholders	—	✓
Overhead Console with Storage	—	✓
Manual Rear Seat Easy Entry	—	✓
Three Zone Climate Control	—	✓

In Car Entertainment

Feature	Audi	INFINITI
Infotainment Display	10.1 in	14.3 in
AM/FM Stereo	✓	✓
Premium Brand Speakers	Bang & Olufsen	—
Stereo Power	730W	600W
Speaker System	17	14
Subwoofer Count	1	1
Surround Audio	Discrete	—
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	With Real Time Traffic
Satellite Radio Trial Period	3 months	3 months
Klipsch Speakers	—	✓
Speed Sensitive Volume Control	—	✓

Power Feature

Feature	Audi	INFINITI
One-Touch Power Windows	4	4
Moonroof Type	1st Row Power Glass Extended	1st Row Power Glass Extended
Keyless Entry	✓	✓
Heated Mirrors	✓	✓
Reverse Tilt Dual Mirrors	—	✓

Frontseats

Feature	Audi	INFINITI
Front Head Room	37.1 in.	39.1 in.
Front Leg Room	41.3 in.	43.8 in.
Front Shoulder Room	59.5 in.	64.2 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Sport	✓	—
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	✓	✓
Passenger Seat Lumbar Support	Power	Power
Passenger Seat Memory Settings	2	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Ventilation	✓	—
Passenger Seat Ventilation	✓	—
Front Hip Room	—	59.9 in.
Seat Material: Leatherette	—	✓
Front Seat Type: Bucket	—	✓

Rearseats

Feature	Audi	INFINITI
Rear Head Room	38.1 in.	37.8 in.
Rear Leg Room	40.2 in.	39.2 in.
Rear Shoulder Room	58.4 in.	63.7 in.
Split-Folding Rear Seatback	✓	—
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	—
Rear Hip Room	—	59.9 in.
Folding Rear Seatback	—	✓
Fixed Center Armrest	—	✓
Heated Rear Seats (Multi-Level)	—	✓
Power Folding Third Row Seat	—	✓

Tires and Wheels

Feature	Audi	INFINITI
Wheel Material	Alloy	Alloy
Wheel Diameter	22 in	—
Tire Type	Performance	All Season
Tire Size	295/40R22	275/60R20
Wheel Size	—	20 x 8.0 in
Spare Tire Type	—	Full Size Non-Matching
Spare Tire Location	—	Underbody Mounted

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./ 30000 mi.	3 yr./ 45000 mi.

Frequently Asked Questions

Common questions about comparing the 2026 Audi RS Q8 and 2026 INFINITI QX80.

What is the total performance difference in horsepower between the two models?

The 2026 Audi RS Q8 boasts 631 hp, representing a significant lead of 181 hp over the 2026 INFINITI QX80, which produces 450 hp.

How does the standard drive system compare for traction?

The Audi RS Q8 utilizes standard all-wheel drive (AWD), while the INFINITI QX80 comes standard with rear-wheel drive (RWD).

Which vehicle requires more expensive gasoline?

The Audi RS Q8 explicitly requires premium unleaded fuel for its high-output engine, whereas the INFINITI QX80 only recommends it.

Is the difference in cargo space substantial for hauling?

Yes, the Audi offers 33 cu ft of cargo capacity, which is significantly greater than the QX80’s 22 cu ft, making the Audi better suited for larger cargo needs.

How much more does the Audi cost compared to the INFINITI?

The 2026 Audi RS Q8 has an MSRP of $138,300, making it $54,550 more expensive than the QX80's starting price of $83,750.

Which vehicle has the larger physical dimensions?

The INFINITI QX80 is considerably larger, measuring 211.2 inches long and 76.6 inches high, compared to the RS Q8's 197.7 inches in length and 67.5 inches in height.