2025 Audi RS 6 vs 2026 INFINITI QX80

$126,600 · Wagon

$83,750 · SUV

Comparison Overview

The 2025 Audi RS 6 wagon unleashes ferocious performance, boasting a staggering 621 horsepower and 627 lb-ft of torque from its engine, making it a genuine speed demon despite its practical five-door setup. Contrast this with the commanding presence of the 2026 INFINITI QX80 SUV, which offers a more traditional luxury experience anchored by 450 horsepower and robust size (211.2 inches long). While the RS 6 demands premium fuel, its 14/21 MPG city/highway might frighten routine drivers, though its handling pedigree shines. The QX80 is marginally more efficient at 18 combined MPG and avoids the mandatory premium fuel requirement. Despite being significantly smaller at 196.7 inches long, the RS 6 offers a competitive 30 cu ft of cargo space, narrowly beating the QX80's 22 cu ft capacity, illustrating the wagon's surprising utility versus the SUV's sheer bulk.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 INFINITI QX80

The INFINITI QX80 is easier on the wallet for daily driving due to its lower MSRP and slightly better efficiency ratings.

👨‍👩‍👧‍👦 Best for Families

2026 INFINITI QX80

The QX80's much taller, wider stance and SUV configuration offer a more traditionally spacious and imposing family vehicle feel.

🏎️ Best for Enthusiasts

2025 Audi RS 6

The Audi RS 6 offers a massive performance advantage with 621 horsepower compared to the QX80's 450 hp.

💰 Best Value

2026 INFINITI QX80

The QX80 is significantly more affordable with a $42,850 lower starting MSRP.

Choose the Audi RS 6 if...

You prioritize outright speed and need 621 hp accessible through an 8-speed automatic transmission.
You value surprising practicality in a performance package, utilizing the 30 cu ft of cargo space.
You prefer an AWD setup optimized for superior grip during high-speed driving maneuvers.

Choose the INFINITI QX80 if...

Budget is a major concern, as the QX80 starts $42,850 less expensive than the RS 6.
You require a vehicle with significant road presence, standing 76.6 inches tall.
You prefer recommended premium fuel rather than the mandatory premium required by the Audi.

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 Height Adjustable 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	—	✓

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]	✓	—

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)	17 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./ 45000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Audi RS 6 and 2026 INFINITI QX80.

How much power difference is there between the 2025 Audi RS 6 and the 2026 QX80?

The Audi RS 6 boasts a massive advantage with 621 horsepower, yielding a difference of 171 hp when compared to the QX80's 450 horsepower. This substantial power gap is reflected in their performance driving character.

Which vehicle offers better cargo capacity?

Surprisingly, the sleeker 2025 Audi RS 6 wagon wins this category, offering 30 cubic feet of cargo space. The 2026 INFINITI QX80 provides 22 cubic feet, sacrificing ultimate capacity for its larger exterior SUV dimensions.

Is the Audi RS 6's mandatory premium fuel requirement a significant cost factor?

Yes, the RS 6 demands premium unleaded, which coupled with its lower 14/21 MPG ratings, suggests higher routine fueling costs compared to the QX80. The QX80 only recommends premium fuel.

What is the core difference in drivetrain layout?

The Audi RS 6 uses an All-Wheel Drive system paired with an 8-speed automatic, enhancing traction and acceleration, whereas the INFINITI QX80 defaults to a Rear Wheel Drive configuration managed by a 9-speed automatic.

How much larger is the INFINITI QX80 externally?

The QX80 is substantially larger than the RS 6; it measures 211.2 inches in length compared to the Audi's 196.7 inches, and it is significantly taller at 76.6 inches versus the wagon's 58.6 inches.