2026 Audi RS 6 vs 2026 INFINITI QX80

$130,700 · Wagon

$83,750 · SUV

Comparison Overview

The 2026 Audi RS 6 ignites the pavement with a staggering 621 horsepower, delivering blistering German performance packaged in a stealthy wagon shell, while the 2026 INFINITI QX80 commands attention with its imposing size and commanding presence, making a luxurious statement on the road. The $46,950 MSRP gap is immense, favoring the QX80 at $83,750 against the RS 6's $130,700 entry point. Despite its higher cost, the Audi counters with a massive 171 horsepower advantage over the QX80's 450 hp output, though this speed comes at the expense of efficiency, yielding only 16 combined MPG compared to the INFINITI’s 18 combined MPG. The RS 6 offers a taut, low-slung drive at 58.6 inches high, contrasting sharply with the QX80’s 76.6-inch height. For sheer practicality, the RS 6 boasts 29.9 cu ft of cargo space, slightly edging out the QX80's 22 cu ft, making this a battle between raw speed and commanding utility.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Audi RS 6

The Audi RS 6's superior agility and 8-speed automatic transmission offer a more engaging experience, even in stop-and-go traffic.

👨‍👩‍👧‍👦 Best for Families

2026 INFINITI QX80

The INFINITI QX80's much larger physical footprint, being 5.5 inches taller and significantly wider, provides superior passenger space and presence for hauling families.

🏎️ Best for Enthusiasts

2026 Audi RS 6

With 621 hp and 627 lb-ft of torque delivered via its standard all-wheel drive, the RS 6 offers undeniable, exhilarating performance metrics.

💰 Best Value

2026 INFINITI QX80

The QX80 delivers 450 hp and significant utility for a price point that is $46,950 less expensive than the RS 6.

Choose the Audi RS 6 if...

You prioritize outright performance, evidenced by its 621 hp engine.
You prefer a wagon body style that still provides 29.9 cu ft of cargo capacity.
You require standard all-wheel drive for superior traction delivery from the 627 lb-ft of torque.

Choose the INFINITI QX80 if...

Your budget is capped under $90,000, considering the QX80's $83,750 MSRP.
You need maximum vertical clearance and presence, standing 76.6 inches tall.
You prefer efficiency gains, as it achieves 18 combined MPG versus the Audi's 16 combined MPG.

Key Dimensions

Dimension	Audi RS 6	INFINITI QX80
Length	196.7"	211.2"
Width	76.8"	83.3"
Height	58.6"	76.6"
Wheelbase	115.3"	121.1"

Features Comparison

Safety

Feature	Audi	INFINITI
Lane Departure Warning	✓	✓
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 Integrated Headrests	✓	—
Rear Headrests	3	2
Rear Fixed Headrests	✓	—
Rear Center 3-Point Seatbelt	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Blind Spot Monitor	—	✓
Lane Keeping Assist System	—	✓
Rear Cross Traffic Alert	—	✓
Driver Attention Alert	—	✓
Third Row Head Airbags	—	✓
Brake Preparation System	—	✓
Front Fog Lights	—	✓
Front Height Adjustable Headrests	—	✓
Rear 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	621 hp	450 hp @ 5600 rpm
Torque	627 lb-ft	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)	14/21 MPG	16/20 MPG
EPA Fuel Economy (Combined)	16 MPG	18 MPG
EPA Driving Range (City/Highway)	270.2/405.3 mi.	377.6/472.0 mi.
Fuel Tank Capacity	19.3 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	✓	✓
Wireless Charging Pad	✓	✓
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	—	✓
Adaptive Cruise Control	—	✓
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	—
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	—	✓
Stereo Power	—	600W
Speaker System	—	14
Subwoofer Count	—	1
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	38.3 in.	39.1 in.
Front Leg Room	41.3 in.	43.8 in.
Front Shoulder Room	57.8 in.	64.2 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	10-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	2	2
Passenger Seat Power Adjustments	10-way	8-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
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	39.5 in.	37.8 in.
Rear Leg Room	37.4 in.	39.2 in.
Rear Shoulder Room	56.5 in.	63.7 in.
Split-Folding Rear Seatback	✓	—
Folding Rear Seat Feature	✓	—
Pass-Thru Center Armrest	✓	—
Rear Hip Room	—	59.9 in.
Folding Rear Seatback	—	✓
Reclining Rear Seats	—	✓
Fixed Center Armrest	—	✓
Heated Rear Seats (Multi-Level)	—	✓
Power Folding Third Row Seat	—	✓

Tires and Wheels

Feature	Audi	INFINITI
Wheel Material	Alloy	Alloy
Wheel Size	21 in	20 x 8.0 in
Tire Type	Performance	All Season
Tire Size	275/35R21	275/60R20
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 6 and 2026 INFINITI QX80.

What is the primary performance difference between the 2026 Audi RS 6 and the QX80?

The Audi RS 6 is significantly more powerful, boasting 621 horsepower compared to the QX80's 450 horsepower. This 171 hp advantage promises much faster acceleration times from the RS 6.

How does the fuel economy compare between these two very different vehicles?

The larger INFINITI QX80 is marginally more efficient, achieving 18 combined MPG, while the high-performance Audi RS 6 requires premium fuel and returns 16 combined MPG.

Which vehicle is better equipped for maximizing passenger or cargo hauling?

While both are spacious, the Audi RS 6 offers slightly more fixed cargo capacity at 29.9 cu ft compared to the QX80's 22 cu ft, despite the QX80 being much larger overall.

What drives the substantial $46,950 price difference between these models?

The price disparity reflects the RS 6's status as a dedicated high-performance wagon utilizing specialized components, leading to an MSRP of $130,700 versus the QX80's $83,750.

Does the drivetrain configuration affect driving dynamics significantly?

Yes, the RS 6 features standard all-wheel drive, whereas the QX80 utilizes a rear-wheel-drive configuration, influencing stability and handling characteristics under hard acceleration.

Is the premium fuel requirement mandatory for both vehicles?

The 2026 Audi RS 6 explicitly requires premium unleaded fuel to achieve its performance figures. Conversely, the 2026 INFINITI QX80 only recommends premium unleaded fuel for its 450 hp output.