2025 Audi S6 vs 2025 Porsche 718 Cayman

$75,900 · Sedan

$72,800 · Coupe

Comparison Overview

The 2025 Audi S6 is the epitome of refined, high-speed executive transport, kicking off with a muscular 444 hp and delivering standard all-wheel-drive confidence. In contrast, the 2025 Porsche 718 Cayman beckons the purist with its razor-sharp, mid-engine dynamics, even with a lower 300 hp output. While the Audi offers superior usability with a substantial 195.0 inches in length and 13.7 cu ft of cargo space, the Porsche counters with superior efficiency, achieving 24 combined MPG versus the S6's 22. The S6 demands $75,900, whereas the Cayman undercuts it at $72,800, despite the Audi packing an extra 144 hp. Both demand premium fuel, but the inherent tradeoff pits brute-force AWD muscle against focused RWD agility in a fascinating contest of modern performance.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Audi S6

The Audi S6's larger sedan footprint and smoother 8-speed automatic transmission provide superior daily comfort and capacity for the typical commute.

👨‍👩‍👧‍👦 Best for Families

2025 Audi S6

As a four-door sedan, the Audi S6 inherently offers practicality and dimensions that the two-seat Porsche Cayman cannot match.

🏎️ Best for Enthusiasts

2025 Porsche 718 Cayman

The Porsche 718 Cayman’s dedicated rear-wheel-drive platform and focus on pure driving dynamics offer a more visceral experience than the AWD S6.

💰 Best Value

2025 Porsche 718 Cayman

The Porsche 718 Cayman provides superior fuel economy at 24 combined MPG and costs $3,100 less than the Audi S6.

Choose the Audi S6 if...

You require the commanding power of 444 hp and 442 lb-ft of torque for instant acceleration.
All-wheel drive security is mandatory for your year-round driving conditions.
You prioritize interior space, evidenced by its 195.0-inch length and sedan layout.

Choose the Porsche 718 Cayman if...

You value the engagement of a dedicated rear-wheel-drive configuration and a 7-speed automated manual.
Budget is a concern, as the Cayman starts $3,100 lower at $72,800.
You seek slightly better efficiency, boasting 24 combined MPG compared to the S6's 22.

Key Dimensions

Dimension	Audi S6	Porsche 718 Cayman
Length	195.0"	172.4"
Width	74.3"	70.9"
Height	56.9"	51.0"
Wheelbase	115.3"	97.4"

Features Comparison

Safety

Feature	Audi	Porsche
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	—
Rear Height Adjustable Headrests	✓	—
Rear Center 3-Point Seatbelt	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Brake Preparation System	—	✓
Xenon High-Intensity Discharge Headlights	—	✓
Adaptive Headlights	—	✓
Cornering Lights	—	✓

Engine

Feature	Audi	Porsche
Base Engine Displacement	2.9 L	2.0 L
Number of Cylinders	V6	flat 4
Base Engine Type	mild hybrid	gas
Horsepower	444 hp	300 hp @ 6500 rpm
Torque	442 lb-ft	280 lb-ft @ 1950 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	Porsche
Transmission Type	8-speed shiftable automatic	7-speed automated manual
Drivetrain Type	all wheel drive	rear wheel drive
Center Differential Type	Limited Slip	—

Fuel

Feature	Audi	Porsche
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	19/27 MPG	21/27 MPG
EPA Fuel Economy (Combined)	22 MPG	24 MPG
EPA Driving Range (City/Highway)	366.7/521.1 mi.	298.2/383.4 mi.
Fuel Tank Capacity	19.3 gal.	14.2 gal.

Comfort & Convenience

Feature	Audi	Porsche
Push Button Start	✓	—
Power Tilt and Telescopic Steering Wheel	✓	—
Transmission Controls on Steering Wheel	✓	✓
Audio Controls on Steering Wheel	✓	—
Electric Power Steering	✓	✓
Rear and Side View Camera	✓	—
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	✓
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	✓	—
Tilt and Telescopic Steering Wheel	—	✓
Rear View Camera	—	✓
Dual Zone Climate Control	—	✓

In Car Entertainment

Feature	Audi	Porsche
Infotainment Display	10.1 in	—
AM/FM Stereo	✓	✓
Stereo Power	180W	150W
Speaker System	10	8
Android Auto (Wireless)	✓	—
Apple CarPlay (Wireless)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	3 months
Apple CarPlay (Wired)	—	✓
Memory Card Slot	—	✓

Power Feature

Feature	Audi	Porsche
One-Touch Power Windows	4	2
Moonroof Type	1st Row Power Glass Extended	—
Keyless Entry	✓	—
Heated Mirrors	✓	✓
Remote Keyless Entry	—	✓

Frontseats

Feature	Audi	Porsche
Front Head Room	38.0 in.	—
Front Leg Room	41.3 in.	—
Front Shoulder Room	57.8 in.	—
Seat Material: Leather	✓	✓
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	8-way	2-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	—
Driver Seat Thigh Extension	✓	—
Driver Seat Memory Settings	2	—
Passenger Seat Power Adjustments	8-way	2-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	—
Passenger Seat Thigh Extension	✓	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Manual Adjustments	—	4-way
Passenger Seat Manual Adjustments	—	4-way

Rearseats

Feature	Audi	Porsche
Rear Head Room	38.1 in.	—
Rear Leg Room	37.4 in.	—
Rear Shoulder Room	56.5 in.	—
Split-Folding Rear Seatback	✓	—
Folding Rear Seat Feature	✓	—
Pass-Thru Center Armrest	✓	—

Tires and Wheels

Feature	Audi	Porsche
Wheel Material	Alloy	Alloy
Wheel Size	21 in	18 x 9.5 in.
Tire Type	Performance	Performance
Tire Size	255/35R21	265/45R Z
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—

Suspension

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

Warranty

Feature	Audi	Porsche
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	12 yr./ unlimited mi.	12 yr./ unlimited mi.
Roadside Assistance	4 yr./ unlimited mi.	4 yr./ 50000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Audi S6 and 2025 Porsche 718 Cayman.

How significant is the horsepower difference between the two vehicles?

The Audi S6 boasts 444 hp, providing a massive 144 hp advantage over the Porsche 718 Cayman's 300 hp output. This power deficit means the Cayman will feel less explosive in straight-line acceleration compared to the turbocharged brute force of the S6.

Which car is better for long highway cruising based on efficiency?

The Porsche 718 Cayman wins marginally on efficiency, achieving 24 combined MPG against the S6's 22 combined MPG, despite requiring premium unleaded in both cases. However, the S6’s larger sedan dimensions often translate to a more insulated highway ride.

Is the Audi S6 significantly larger than the Porsche 718 Cayman?

Yes, the Audi S6 is substantially larger; it measures 195.0 inches in length compared to the Cayman’s 172.4 inches. This 22.6-inch difference results in greater interior volume for passengers in the S6 sedan.

How does the drivetrain affect the driving style of each car?

The Audi S6 uses all-wheel drive (AWD) paired with a conventional automatic, focusing on high-speed stability and grip. The Cayman utilizes rear-wheel drive (RWD) with a specialized 7-speed automated manual, prioritizing precise handling balance and driver feedback.

Do these cars offer similar cargo capacity?

No, the Porsche 718 Cayman technically offers slightly more usable space with 15 cu ft compared to the Audi S6’s 13.7 cu ft. While the S6 offers a traditional trunk opening, the Cayman's coupe design manages to store slightly more volume overall.

Considering the initial purchase price, which offers better value?

The Porsche 718 Cayman offers better foundational value, priced $3,100 lower than the Audi S6 while delivering superior fuel economy figures. However, value is subjective based on the buyer prioritizing pure performance versus luxury sedan features.