2025 Genesis G90 vs 2026 Audi S8

$89,700 · Sedan

$130,000 · Sedan

Comparison Overview

The 2025 Genesis G90 charms with understated elegance, offering a serene executive transport experience for a starting MSRP of $89,700, powered by a 375 hp engine. Conversely, the 2026 Audi S8 unleashes brute force, beginning at a commanding $130,000 with a spectacular 563 hp and massive 590 lb-ft of torque, making it a true performance flagship. The power gulf is significant, with the S8 boasting 188 more horsepower than the G90. Fuel economy leans toward the Genesis, achieving a combined 21 MPG compared to the Audi's 18 MPG, despite both utilizing AWD. While the G90 is marginally smaller in length (207.7 inches vs 209.5 inches for the S8), the staggering $40,300 price difference is the primary differentiator between this study in comfort and this titan of speed. The S8's performance pedigree justifies its premium over the G90's plush value proposition.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Genesis G90

The Genesis G90's superior 21 MPG combined efficiency offers substantial long-term running cost savings for the daily drive.

👨‍👩‍👧‍👦 Best for Families

2026 Audi S8

The Audi S8 provides slightly more usability for occupants with a marginally larger 12.5 cu ft cargo capacity.

🏎️ Best for Enthusiasts

2026 Audi S8

The Audi S8 is the undeniable choice for thrill-seekers, delivering 563 hp and 590 lb-ft of torque versus the G90's 375 hp.

💰 Best Value

2025 Genesis G90

The Genesis G90 offers a premium experience for $40,300 less than the formidable Audi S8.

Choose the Genesis G90 if...

Your primary focus is fiscal responsibility, saving $40,300 off the entry price.
You prioritize slightly better fuel efficiency, achieving 21 MPG combined.
You prefer a smooth, luxurious highway cruiser over outright acceleration.

Choose the Audi S8 if...

You demand blistering acceleration, backed by 563 hp and 590 lb-ft of torque.
Your budget easily accommodates the $130,000 MSRP for top-tier performance.
You require the maximum available space, offering 12.5 cu ft of cargo room.

Key Dimensions

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

Features Comparison

Safety

Feature	Genesis	Audi
Blind Spot Monitor	✓	—
Lane Departure Warning	✓	✓
Lane Keeping Assist System	✓	—
Rear Cross Traffic Alert	✓	—
Driver Attention 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	✓	✓
Daytime Running Lights	✓	✓
Front Headrests	2	2
Front Power Adjustable Headrests	✓	—
Rear Headrests	3	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Brake Preparation System	—	✓
Self-Leveling Headlights	—	✓
Cornering Lights	—	✓
Headlight Washers	—	✓
Front Fog Lights	—	✓
Integrated Turn Signal Mirrors	—	✓
Front Height Adjustable Headrests	—	✓

Engine

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

Drive Train

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

Fuel

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

Comfort & Convenience

Feature	Genesis	Audi
Push Button Start	✓	✓
Power Tilt and Telescopic Steering Wheel	✓	✓
Transmission Controls on Steering Wheel	✓	✓
Cruise Control 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 with Side Sensing	✓	—
Automatic Parking Assist	✓	—
Wireless Charging Pad	✓	✓
Adaptive Cruise Control	✓	—
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Overhead Console with Storage	✓	—
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Heated Steering Wheel	✓	✓
Three Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	✓
Extended Cabin Heating/Cooling	✓	—
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Cargo Floor Mats	✓	—
Rear Parking Sensors	—	✓
Cruise Control	—	✓
Four Zone Climate Control	—	✓
Interior Air Filtration	—	✓
Extended Cabin Heating	—	✓
Turn Signal Indicators in Mirrors	—	✓
Cooled Storage Compartment	—	✓

In Car Entertainment

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

Power Feature

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

Frontseats

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

Rearseats

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

Tires and Wheels

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

Suspension

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

Warranty

Feature	Genesis	Audi
Basic Warranty	5 yr./ 60000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	10 yr./ 100000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	7 yr./ unlimited mi.	12 yr./ unlimited mi.
Roadside Assistance	5 yr./ unlimited mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	3 yr./ 30000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Genesis G90 and 2026 Audi S8.

What is the primary performance difference between the 2025 Genesis G90 and the 2026 Audi S8?

The 2026 Audi S8 is significantly more potent, delivering 563 horsepower and 590 lb-ft of torque, compared to the G90's 375 hp and 391 lb-ft of torque. This difference of 188 horsepower means the S8 offers a far more aggressive acceleration profile.

How does the fuel economy compare for these two AWD luxury sedans?

The Genesis G90 holds a clear advantage in fuel sipping, rated at 21 MPG combined using premium unleaded (recommended). The power-hungry Audi S8 is rated lower at 18 MPG combined and strictly requires premium unleaded fuel.

Is the Genesis G90 a good choice if I am conscious about the initial purchase price?

Absolutely; the G90 offers tremendous luxury value with an MSRP of $89,700. This represents a massive $40,300 saving compared to the Audi S8's $130,000 starting price.

Do the physical dimensions significantly impact maneuverability?

The vehicles are very similar in footprint; the G90 is 207.7 inches long, while the S8 stretches slightly further to 209.5 inches. Both utilize an 8-speed shiftable automatic transmission with all-wheel drive for confident handling.

Which sedan offers more practical cargo space for trips?

The Audi S8 holds a marginal lead in utility, offering 12.5 cubic feet of cargo capacity. The Genesis G90 is very close behind with 12.0 cubic feet, meaning both are relatively compact for full-size luxury sedans.

What is the difference in their overall approach to luxury driving?

The G90 emphasizes serene isolation and value, leveraging its efficient powertrain for smooth cruising. In contrast, the S8 uses its massive power reserves to deliver an exhilarating, high-performance driving experience that commands respect.