2025 Audi S8 vs 2025 Genesis G90

$125,300 · Sedan

$89,700 · Sedan

Comparison Overview

The most significant numerical difference between the 2025 Audi S8 and the 2025 Genesis G90 is the substantial $35,600 MSRP gap, with the G90 priced at $89,700 against the S8's $125,300. This price variance accompanies a considerable performance gap: the S8 delivers 563 hp and 590 lb-ft of torque, significantly outperforming the G90's 375 hp and 391 lb-ft of torque. Fuel economy is a trade-off, as the G90 achieves 21 MPG combined, notably better than the S8's 18 MPG combined rating. Dimensionally, the vehicles are similar, with the S8 being marginally longer at 209.5 inches versus 207.7 inches. Both feature AWD, but the S8 demands premium unleaded fuel while the G90 only recommends it.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Genesis G90

The Genesis G90 offers superior efficiency for daily driving with its 21 MPG combined rating compared to the Audi S8's 18 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 Genesis G90

The G90 provides near-identical practicality with only 0.5 cu ft less cargo capacity (12.0 vs 12.5 cu ft) at a vastly lower price point.

🏎️ Best for Enthusiasts

2025 Audi S8

The Audi S8 offers a commanding performance advantage with 563 hp and 590 lb-ft of torque, 188 hp more than the G90.

💰 Best Value

2025 Genesis G90

The Genesis G90 delivers near-flagship luxury for $35,600 less than the Audi S8, representing superior fiscal value.

Choose the Audi S8 if...

Absolute peak performance is required, evidenced by its 563 hp output.
The owner prioritizes handling stability derived from an AWD system paired with high torque (590 lb-ft).
Budget is not a constraint, allowing for the $125,300 investment.

Choose the Genesis G90 if...

Maximizing fuel economy is crucial, as indicated by its 21 MPG combined rating.
The primary goal is luxury transportation where fuel is only 'recommended' premium, not 'required' like in the S8.
A significant cost savings of $35,600 compared to the S8 is a deciding factor.

Key Dimensions

Dimension	Audi S8	Genesis G90
Length	209.5"	207.7"
Width	76.6"	76.0"
Height	58.5"	58.7"
Wheelbase	123.2"	125.2"

Features Comparison

Safety

Feature	Audi	Genesis
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 Preparation System	✓	—
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Self-Leveling Headlights	✓	—
Daytime Running Lights	✓	✓
Cornering Lights	✓	—
Headlight Washers	✓	—
Front Fog Lights	✓	—
Integrated Turn Signal Mirrors	✓	—
Front Headrests	2	2
Front Height Adjustable Headrests	✓	—
Rear Headrests	3	3
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	—	✓
Front Power Adjustable Headrests	—	✓

Engine

Feature	Audi	Genesis
Base Engine Displacement	4.0 L	3.5 L
Number of Cylinders	V8	V6
Base Engine Type	mild hybrid	gas
Horsepower	563 hp	375 hp @ 5800 rpm
Torque	590 lb-ft	391 lb-ft @ 4500 rpm
Number of Valves	32	24
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓
Cylinder Deactivation	✓	—

Drive Train

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

Fuel

Feature	Audi	Genesis
Fuel Type	premium unleaded (required)	premium unleaded (recommended)
EPA Fuel Economy (City/Highway)	15/24 MPG	18/26 MPG
EPA Fuel Economy (Combined)	18 MPG	21 MPG
EPA Driving Range (City/Highway)	325.5/520.8 mi.	347.4/501.8 mi.
Fuel Tank Capacity	21.7 gal.	19.3 gal.

Comfort & Convenience

Feature	Audi	Genesis
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	✓	—
Extended Cabin Heating	✓	—
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	—
Cooled Storage Compartment	✓	—
Cruise Control on Steering Wheel	—	✓
Rear Parking Sensors with Side Sensing	—	✓
Automatic Parking Assist	—	✓
Adaptive Cruise Control	—	✓
Overhead Console with Storage	—	✓
Three Zone Climate Control	—	✓
Extended Cabin Heating/Cooling	—	✓
Cargo Floor Mats	—	✓

In Car Entertainment

Feature	Audi	Genesis
Infotainment Display	10.1 in	12.3 in
AM/FM Stereo	✓	✓
Premium Brand Speakers	Bang & Olufsen	Bang & Olufsen
Stereo Power	730W	1400W
Speaker System	17	15
Surround Audio	Discrete	Discrete
Android Auto (Wireless)	✓	—
Apple CarPlay (Wireless)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	3 months
Speed Sensitive Volume Control	✓	✓
Android Auto (Wired)	—	✓
Apple CarPlay (Wired)	—	✓

Power Feature

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

Frontseats

Feature	Audi	Genesis
Front Head Room	38.3 in.	39.4 in.
Front Leg Room	41.5 in.	42.3 in.
Front Shoulder Room	59.1 in.	59.1 in.
Seat Material: Premium Leather	✓	✓
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	18-way	18-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	2	3
Passenger Seat Power Adjustments	18-way	16-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	✓	✓
Seat Massage Function	✓	✓
Front Seat Type: Bucket	—	✓
Driver Seat Thigh Extension	—	✓
Passenger Seat Thigh Extension	—	✓

Rearseats

Feature	Audi	Genesis
Rear Head Room	38.5 in.	38.0 in.
Rear Leg Room	44.3 in.	37.8 in.
Rear Shoulder Room	57.6 in.	57.9 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	—
Pass-Thru Center Armrest	✓	—
Reclining Rear Seats	—	✓
Folding Center Armrest	—	✓
Heated Rear Seats (Multi-Level)	—	✓

Tires and Wheels

Feature	Audi	Genesis
Wheel Material	Alloy	—
Wheel Size	21 in	20 x 9.5 in.
Tire Type	Performance	All Season
Tire Size	265/35R21	275/40R20
Spare Tire Type	Temporary	Temporary
Spare Tire Location	Inside Mounted	Inside Mounted
Painted Alloy Wheels	—	✓
Polished Alloy Wheels	—	✓

Suspension

Feature	Audi	Genesis
Four-Wheel Independent Suspension	✓	✓

Warranty

Feature	Audi	Genesis
Basic Warranty	4 yr./ 50000 mi.	5 yr./ 60000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	10 yr./ 100000 mi.
Corrosion/Rust Warranty	12 yr./ unlimited mi.	7 yr./ unlimited mi.
Roadside Assistance	4 yr./ unlimited mi.	5 yr./ unlimited mi.
Complimentary Scheduled Maintenance	—	3 yr./ 36000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Audi S8 and 2025 Genesis G90.

What is the primary performance advantage of the 2025 Audi S8 over the Genesis G90?

The Audi S8 boasts significantly higher output, producing 563 horsepower and 590 lb-ft of torque, which is 188 hp and 199 lb-ft more than the Genesis G90’s figures.

How do the fuel economy ratings compare between the two luxury sedans?

The 2025 Genesis G90 holds a clear efficiency lead with a combined rating of 21 MPG (18 city/26 highway) compared to the Audi S8's 18 MPG combined (15 city/24 highway).

Is the price difference justified by substantially more interior or cargo space?

No, the price difference is $35,600, yet cargo space is nearly identical, with the S8 offering 12.5 cu ft versus the G90's 12.0 cu ft.

Do both cars require the same type of fuel?

The Audi S8 explicitly requires premium unleaded fuel to achieve its performance metrics. In contrast, the Genesis G90 only recommends premium unleaded, offering more flexibility.

Are the exterior dimensions of these two large sedans very different?

Not significantly; the Audi S8 is slightly longer at 209.5 inches, while the Genesis G90 is marginally taller at 58.7 inches versus the S8's 58.5 inches.