2026 Genesis G90 vs 2026 Mercedes-Benz S-Class

$92,700 · Sedan

$119,500 · Sedan

Comparison Overview

The $26,800 MSRP gap between the 2026 Genesis G90 ($92,700) and the 2026 Mercedes-Benz S-Class ($119,500) is the most significant differentiator. This price variance corresponds with performance metrics, as the S-Class delivers 442 hp and 413 lb-ft of torque, significantly outperforming the G90's 375 hp and 391 lb-ft. Fuel economy shows a slight advantage for the Mercedes, achieving 23 combined MPG versus the Genesis's 21 combined MPG, though both mandate premium unleaded fuel. Dimensional analysis shows the S-Class is marginally longer at 209.5 inches compared to 207.7 inches, but the G90 provides slightly less cargo space at 12.0 cu ft versus 12.8 cu ft. For buyers prioritizing sheer power metrics, the S-Class offers a 67 hp surplus.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Genesis G90

The Genesis G90 offers superior daily driving efficiency with 21 combined MPG compared to the S-Class's 23 combined MPG, and its lower initial cost mitigates depreciation risk.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz S-Class

The S-Class offers a slightly larger cargo capacity of 12.8 cu ft and superior rear-seat refinement, suggesting a marginally better package for passenger utility.

🏎️ Best for Enthusiasts

2026 Mercedes-Benz S-Class

The Mercedes-Benz S-Class boasts 442 horsepower and 413 lb-ft of torque, delivering a substantial 67 hp advantage over the Genesis G90.

💰 Best Value

2026 Genesis G90

The Genesis G90 provides a full-size luxury experience while maintaining a substantial $26,800 lower starting MSRP than the S-Class.

Choose the Genesis G90 if...

Budget consciousness is paramount, given the $92,700 MSRP compared to the S-Class's $119,500.
You prioritize high-output performance without needing the 442 hp offered by the competitor (375 hp is ample).
You prefer a marginally lower overall height profile at 58.7 inches for garage fitment.

Choose the Mercedes-Benz S-Class if...

Maximum outright acceleration is required, leveraging the 67 hp advantage (442 hp total).
A 9-speed automatic transmission is preferred over the G90's 8-speed unit.
You need the slight edge in efficiency, achieving 23 combined MPG versus 21 combined MPG.

Key Dimensions

Dimension	Genesis G90	Mercedes-Benz S-Class
Length	207.7"	209.5"
Width	76.0"	75.6"
Height	58.7"	59.2"
Wheelbase	125.2"	126.6"

Features Comparison

Safety

Feature	Genesis	Mercedes-Benz
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	✓	✓
Front Cross Traffic Alert	—	✓
Brake Drying	—	✓
Brake Preparation System	—	✓
Adaptive Headlights	—	✓
Self-Leveling Headlights	—	✓
Cornering Lights	—	✓
Integrated Turn Signal Mirrors	—	✓
Rear Multi-Adjustable Headrests	—	✓

Engine

Feature	Genesis	Mercedes-Benz
Base Engine Displacement	3.5 L	3.0 L
Number of Cylinders	V6	inline 6
Base Engine Type	gas	mild hybrid
Horsepower	375 hp @ 5800 rpm	442 hp
Torque	391 lb-ft @ 1300 rpm	413 lb-ft
Number of Valves	24	24
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	Genesis	Mercedes-Benz
Transmission Type	8-speed shiftable automatic	9-speed shiftable automatic
Drivetrain Type	all wheel drive	all wheel drive
Center Differential Type	Limited Slip	Limited Slip

Fuel

Feature	Genesis	Mercedes-Benz
Fuel Type	premium unleaded (recommended)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	18/26 MPG	20/29 MPG
EPA Fuel Economy (Combined)	21 MPG	23 MPG
EPA Driving Range (City/Highway)	347.4/501.8 mi.	400.0/580.0 mi.
Fuel Tank Capacity	19.3 gal.	20.0 gal.

Comfort & Convenience

Feature	Genesis	Mercedes-Benz
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	✓	✓
Rear Parking Sensors	—	✓
Wood Trim on Steering Wheel	—	✓
Dual Zone Climate Control	—	✓
Rear Ventilation Ducts	—	✓
Interior Air Filtration	—	✓
Sun Sensor	—	✓
Turn Signal Indicators in Mirrors	—	✓

In Car Entertainment

Feature	Genesis	Mercedes-Benz
Infotainment Display	12.3 in	12.8 in
AM/FM Stereo	✓	✓
Premium Brand Speakers	Bang & Olufsen	—
Stereo Power	1400W	710W
Speaker System	15	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	6 months
Speed Sensitive Volume Control	✓	✓
Premium Speaker Brand	—	Burmester
Subwoofer Count	—	2
Auxiliary Audio Input	—	✓

Power Feature

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

Frontseats

Feature	Genesis	Mercedes-Benz
Front Head Room	39.4 in.	42.1 in.
Front Leg Room	42.3 in.	41.4 in.
Front Shoulder Room	59.1 in.	59.6 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	18-way	12-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Thigh Extension	✓	✓
Driver Seat Memory Settings	3	3
Passenger Seat Power Adjustments	16-way	12-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	✓	✓
Seat Material: Leather	—	✓
Passenger Seat Memory Settings	—	3

Rearseats

Feature	Genesis	Mercedes-Benz
Rear Head Room	38.0 in.	39.4 in.
Rear Leg Room	37.8 in.	43.8 in.
Rear Shoulder Room	57.9 in.	59.0 in.
Split-Folding Rear Seatback	✓	—
Reclining Rear Seats	✓	—
Folding Center Armrest	✓	✓
Heated Rear Seats (Multi-Level)	✓	—

Tires and Wheels

Feature	Genesis	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	20 x 9.5 in.	19 x 8.5 in
Tire Type	All Season	—
Tire Size	275/40R20	255/45R19
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Material	—	Alloy
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	Genesis	Mercedes-Benz
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.	4 yr./ 50000 mi.
Roadside Assistance	5 yr./ unlimited mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2026 Genesis G90 and 2026 Mercedes-Benz S-Class.

What is the direct cost difference between the two flagship sedans?

The 2026 Mercedes-Benz S-Class carries a significant MSRP premium of $119,500, which is exactly $26,800 more than the 2026 Genesis G90's starting price of $92,700. This mandates a higher capital investment for the S-Class.

How do the power outputs compare numerically?

The S-Class produces 442 horsepower and 413 lb-ft of torque, resulting in a 67 hp and 22 lb-ft advantage over the G90’s 375 hp and 391 lb-ft. Both vehicles utilize AWD and premium fuel.

Is the G90 significantly less efficient in city driving?

No, the difference is minor; the G90 achieves 18 City MPG, only two points lower than the S-Class’s 20 City MPG rating. Both models operate on an 8-speed (G90) or 9-speed (S-Class) automatic transmission.

Which sedan offers better physical dimensions for passenger space?

The S-Class is marginally longer at 209.5 inches versus 207.7 inches and offers slightly more usable space with 12.8 cu ft of cargo capacity compared to the G90's 12.0 cu ft. Both vehicles share similar overall widths.

Are there differences in mandated fuel type?

Yes, while both require premium fuel, the specification lists the Genesis G90 as 'recommended' for premium unleaded, whereas the Mercedes-Benz S-Class explicitly lists it as 'required'.

Which vehicle provides a better powertrain setup for enthusiasts based on specs?

The S-Class is the clear enthusiast choice due to its substantially higher horsepower (442 hp) and its use of a 9-speed automatic transmission, which generally allows for more precise gear selection than the G90's 8-speed unit.