2025 Porsche Cayenne Coupe vs 2026 Audi RS Q8

$89,800 · Crossover

$138,300 · Crossover

Comparison Overview

The most significant divergence between the 2025 Porsche Cayenne Coupe (MSRP $89,800) and the 2026 Audi RS Q8 (MSRP $138,300) is the staggering $48,500 price delta. This cost translates directly into substantial performance metrics, with the RS Q8 boasting 631 hp and 627 lb-ft of torque, dramatically outpacing the Cayenne Coupe's 348 hp and 368 lb-ft. Fuel efficiency is another key metric, where the Porsche leads with a 19 MPG combined rating versus the Audi’s 16 MPG combined. While the RS Q8 is slightly larger in length (197.7 inches vs. 194.0 inches) and offers superior utility with 33 cu ft of cargo space compared to the Porsche’s 20.9 cu ft, this added practicality comes at a significant monetary premium for both purchase price and running costs, given the fuel economy gap.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Porsche Cayenne Coupe

The 2025 Porsche Cayenne Coupe is the clear winner for commuting due to its superior fuel economy of 19 MPG combined versus the Audi's 16 MPG.

👨‍👩‍👧‍👦 Best for Families

2026 Audi RS Q8

The 2026 Audi RS Q8 offers superior family hauling capacity with 33 cubic feet of cargo space compared to the Cayenne Coupe's 20.9 cubic feet.

🏎️ Best for Enthusiasts

2026 Audi RS Q8

Enthusiasts will favor the RS Q8 due to its massive performance advantage, delivering 631 horsepower and 627 lb-ft of torque.

💰 Best Value

2025 Porsche Cayenne Coupe

The Porsche Cayenne Coupe provides a more sensible monetary outlay, priced $48,500 less than the performance-oriented Audi RS Q8.

Choose the Porsche Cayenne Coupe if...

Your priority is minimizing operational costs, as the Cayenne achieves 19 MPG combined.
You require an AWD crossover but wish to maintain an MSRP under $90,000 ($89,800 base).
You prefer slightly more maneuverable dimensions, given its 194.0-inch length.

Choose the Audi RS Q8 if...

Maximum acceleration and power are required, indicated by the RS Q8's 631 hp output.
You need substantial utility, supported by 33 cubic feet of available cargo volume.
The budget allows for the $138,300 MSRP to acquire performance metrics like 627 lb-ft of torque.

Key Dimensions

Dimension	Porsche Cayenne Coupe	Audi RS Q8
Length	194.0"	197.7"
Width	78.1"	79.0"
Height	66.1"	67.5"
Wheelbase	114.0"	117.9"

Features Comparison

Safety

Feature	Porsche	Audi
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	✓	✓
Adaptive Headlights	✓	—
Daytime Running Lights	✓	✓
Cornering Lights	✓	—
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Integrated Headrests	✓	✓
Rear Headrests	2	3
Rear Height Adjustable Headrests	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Rear Center 3-Point Seatbelt	—	✓

Engine

Feature	Porsche	Audi
Base Engine Displacement	3.0 L	4.0 L
Number of Cylinders	V6	V8
Base Engine Type	gas	mild hybrid
Horsepower	348 hp @ 5400 rpm	631 hp @ 6000 rpm
Torque	368 lb-ft @ 1450 rpm	627 lb-ft @ 2300 rpm
Number of Valves	24	32
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	Porsche	Audi
Transmission Type	8-speed shiftable automatic	8-speed shiftable automatic
Drivetrain Type	all wheel drive	all wheel drive
Center Differential Type	Limited Slip	—
Hill Descent Control	✓	✓
[object Object]	—	✓
[object Object]	—	✓

Fuel

Feature	Porsche	Audi
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	17/23 MPG	14/20 MPG
EPA Fuel Economy (Combined)	19 MPG	16 MPG
EPA Driving Range (City/Highway)	402.9/545.1 mi.	315.0/450.0 mi.
Fuel Tank Capacity	23.7 gal.	22.5 gal.

Comfort & Convenience

Feature	Porsche	Audi
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	✓	—
Automatic Parking Assist	✓	—
Wireless Charging Pad	✓	✓
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	✓	—
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Cooled Storage Compartment	✓	—
Rear Parking Sensors with Side Sensing	—	✓
Adaptive Cruise Control	—	✓
Heated Steering Wheel	—	✓
Four Zone Climate Control	—	✓
Rear Ventilation Ducts with Fan Control	—	✓

In Car Entertainment

Feature	Porsche	Audi
AM/FM Stereo	✓	✓
Stereo Power	150W	730W
Speaker System	10	17
Android Auto (Wired)	✓	—
Apple CarPlay (Wired)	✓	—
USB Port	✓	✓
Auxiliary Audio Input	✓	—
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	3 months
Infotainment Display	—	10.1 in
Premium Brand Speakers	—	Bang & Olufsen
Subwoofer Count	—	1
Surround Audio	—	Discrete
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓
USB Port with External Media Control	—	✓

Power Feature

Feature	Porsche	Audi
One-Touch Power Windows	4	4
Moonroof Type	1st Row Fixed Glass Extended	1st Row Power Glass Extended
Keyless Entry	✓	✓
Heated Mirrors	✓	✓

Frontseats

Feature	Porsche	Audi
Seat Material: Leather	✓	—
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Memory Settings	3	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 Head Room	—	37.1 in.
Front Leg Room	—	41.3 in.
Front Shoulder Room	—	59.5 in.
Seat Material: Premium Leather	—	✓
Driver Seat Lumbar Support	—	Power
Passenger Seat Lumbar Support	—	Power
Passenger Seat Memory Settings	—	2
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓

Rearseats

Feature	Porsche	Audi
Split-Folding Rear Seatback	✓	✓
Folding Center Armrest	✓	✓
Rear Head Room	—	38.1 in.
Rear Leg Room	—	40.2 in.
Rear Shoulder Room	—	58.4 in.
Reclining Rear Seats	—	✓

Tires and Wheels

Feature	Porsche	Audi
Wheel Material	Alloy	Alloy
Wheel Size	20 x 10.5 in.	—
Tire Type	All Season	Performance
Tire Size	295/45R20	295/40R22
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Diameter	—	22 in

Suspension

Feature	Porsche	Audi
Four-Wheel Independent Suspension	✓	✓
Front Stabilizer Bar	✓	✓
Rear Stabilizer Bar	✓	✓

Warranty

Feature	Porsche	Audi
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
EV Battery Warranty	8 yr./ 100000 mi.	—
Corrosion/Rust Warranty	12 yr./ unlimited mi.	12 yr./ unlimited mi.
Roadside Assistance	4 yr./ 50000 mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	—	3 yr./ 30000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Porsche Cayenne Coupe and 2026 Audi RS Q8.

What is the raw power difference between the 2025 Cayenne Coupe and the 2026 RS Q8?

The 2026 Audi RS Q8 offers significantly more power, generating 631 horsepower and 627 lb-ft of torque. This represents a 283 hp advantage over the 2025 Porsche Cayenne Coupe, which produces 348 hp and 368 lb-ft of torque.

Is the higher price of the Audi RS Q8 justified by usable cargo space?

The Audi RS Q8 costs $48,500 more than the Porsche, but it does offer 12.1 cubic feet more cargo space (33 cu ft vs. 20.9 cu ft). This extra utility is a direct benefit of the larger vehicle dimensions.

How much more does the required premium fuel affect ownership costs?

Both vehicles require premium unleaded fuel, but the lower efficiency of the RS Q8 (16 MPG combined) means it will consume fuel faster than the Cayenne Coupe (19 MPG combined), leading to higher long-term refueling expenses.

Do both SUVs utilize similar drivetrain and transmission setups?

Yes, both the 2025 Porsche Cayenne Coupe and the 2026 Audi RS Q8 feature an all-wheel-drive system paired with an 8-speed shiftable automatic transmission.

What is the exact difference in MSRP between these two luxury crossovers?

The 2026 Audi RS Q8 has an MSRP of $138,300, making it exactly $48,500 more expensive than the 2025 Porsche Cayenne Coupe's starting price of $89,800.

Which vehicle is physically larger on the road?

The Audi RS Q8 is dimensionally larger, measuring 197.7 inches long, 79.0 inches wide, and 67.5 inches high. The Cayenne Coupe is slightly more compact at 194.0 inches long and 66.1 inches high.