2025 INFINITI QX80 vs 2026 Mercedes-Benz Amg Gt

$82,450 · SUV

$102,100 · Wagon

Comparison Overview

The most significant numerical divergence between the 2025 INFINITI QX80 and the 2026 Mercedes-Benz Amg Gt is the MSRP, with the QX80 priced $19,650 lower at $82,450 compared to the AMG GT's $102,100. Power output heavily favors the QX80, delivering 450 hp and 516 lb-ft of torque against the AMG GT's 362 hp and 369 lb-ft. Despite the power deficit, the AMG GT, classified as a Wagon, achieves superior fuel economy, posting 21 combined MPG versus the QX80 SUV's 18 combined MPG. Dimensionally, the QX80 is substantially larger, measuring 211.2 inches in length and 83.3 inches in width, contributing to its superior 22 cu ft of cargo capacity, whereas the AMG GT offers 16.1 cu ft. Both utilize a 9-speed shiftable automatic transmission, but the QX80 employs RWD while the AMG GT uses AWD.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz Amg Gt

The Mercedes-Benz Amg Gt offers better efficiency with 21 combined MPG compared to the QX80's 18 combined MPG.

👨‍👩‍👧‍👦 Best for Families

2025 INFINITI QX80

The INFINITI QX80 provides substantially more space with 22 cu ft of cargo capacity and greater exterior dimensions.

🏎️ Best for Enthusiasts

2025 INFINITI QX80

The QX80 generates significantly more output with 450 hp and 516 lb-ft of torque.

💰 Best Value

2025 INFINITI QX80

The QX80 is $19,650 less expensive while delivering 88 more horsepower.

Choose the INFINITI QX80 if...

Maximum power is required, as the QX80 produces 450 hp and 516 lb-ft of torque.
Superior interior space is a priority, evidenced by 22 cu ft of cargo capacity.
Cost savings are critical, with an MSRP of $82,450.

Choose the Mercedes-Benz Amg Gt if...

Higher fuel efficiency is desired, with the AMG GT achieving 21 combined MPG.
The vehicle must feature All-Wheel Drive capability.
A lower overall profile and width are preferable, measuring 57.3 inches in height and 76.9 inches in width.

Key Dimensions

Dimension	INFINITI QX80	Mercedes-Benz Amg Gt
Length	211.2"	199.0"
Width	83.3"	76.9"
Height	76.6"	57.3"
Wheelbase	121.0"	116.2"

Features Comparison

Safety

Feature	INFINITI	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	✓	✓
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Third Row 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	✓	✓
Daytime Running Lights	✓	✓
Front Fog Lights	✓	—
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Height Adjustable Headrests	✓	—
Rear Headrests	2	2
Rear Height Adjustable Headrests	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Brake Drying	—	✓
Adaptive Headlights	—	✓
Front Power Adjustable Headrests	—	✓
Rear Integrated Headrests	—	✓

Engine

Feature	INFINITI	Mercedes-Benz
Base Engine Displacement	3.5 L	3.0 L
Number of Cylinders	V6	inline 6
Base Engine Type	gas	mild hybrid
Horsepower	450 hp @ 5600 rpm	362 hp @ 5500 rpm
Torque	516 lb-ft @ 3600 rpm	369 lb-ft @ 1800 rpm
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	INFINITI	Mercedes-Benz
Transmission Type	9-speed shiftable automatic	9-speed shiftable automatic
Drivetrain Type	rear wheel drive	all wheel drive
[object Object]	—	✓
[object Object]	—	✓

Fuel

Feature	INFINITI	Mercedes-Benz
Fuel Type	premium unleaded (recommended)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	16/20 MPG	19/24 MPG
EPA Fuel Economy (Combined)	18 MPG	21 MPG
EPA Driving Range (City/Highway)	377.6/472.0 mi.	400.9/506.4 mi.
Fuel Tank Capacity	23.6 gal.	21.1 gal.

Comfort & Convenience

Feature	INFINITI	Mercedes-Benz
Push Button Start	✓	✓
Power Tilt and Telescopic Steering Wheel	✓	✓
Audio Controls on Steering Wheel	✓	✓
Cruise Control on Steering Wheel	✓	✓
Electric Power Steering	✓	✓
Front View Camera	✓	✓
Side View Camera	✓	✓
Rear View Camera	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	✓
Wireless Charging Pad	✓	✓
Adaptive Cruise Control	✓	—
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
3rd Row Cupholders	✓	—
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Overhead Console with Storage	✓	—
Front Seatback Storage	✓	✓
Manual Rear Seat Easy Entry	✓	—
Leather Steering Wheel	✓	✓
Heated Steering Wheel	✓	—
Three Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	—
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Transmission Controls on Steering Wheel	—	✓
Automatic Parking Assist	—	✓
Cruise Control	—	✓
Dual Zone Climate Control	—	✓
Rear Ventilation Ducts	—	✓
Sun Sensor	—	✓

In Car Entertainment

Feature	INFINITI	Mercedes-Benz
Infotainment Display	14.3 in	12.3 in
AM/FM Stereo	✓	✓
Klipsch Speakers	✓	—
Stereo Power	600W	640W
Speaker System	14	14
Subwoofer Count	1	—
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	With Real Time Traffic	✓
Satellite Radio Trial Period	3 months	6 months
Speed Sensitive Volume Control	✓	✓
Premium Brand Stereo System	—	Burmester
Premium Speaker Brand	—	Burmester
Surround Audio	—	Discrete

Power Feature

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

Frontseats

Feature	INFINITI	Mercedes-Benz
Front Head Room	39.1 in.	40.8 in.
Front Leg Room	43.8 in.	41.7 in.
Front Shoulder Room	64.2 in.	57.8 in.
Front Hip Room	59.9 in.	—
Seat Material: Leatherette	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	10-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	2	3
Passenger Seat Power Adjustments	8-way	10-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
Seat Material: Leatherette/Sueded Microfiber	—	✓
Driver Seat Thigh Extension	—	✓
Passenger Seat Thigh Extension	—	✓
Passenger Seat Memory Settings	—	3

Rearseats

Feature	INFINITI	Mercedes-Benz
Rear Head Room	37.8 in.	38.2 in.
Rear Leg Room	39.2 in.	—
Rear Shoulder Room	63.7 in.	57.2 in.
Rear Hip Room	59.9 in.	—
Folding Rear Seatback	✓	—
Reclining Rear Seats	✓	—
Fixed Center Armrest	✓	—
Heated Rear Seats (Multi-Level)	✓	—
Power Folding Third Row Seat	✓	—

Tires and Wheels

Feature	INFINITI	Mercedes-Benz
Wheel Material	Alloy	Alloy
Wheel Size	20 x 8.0 in	19 x 11.0 in.
Tire Type	All Season	Performance
Tire Size	275/60R20	285/40R19
Spare Tire Type	Full Size Non-Matching	—
Spare Tire Location	Underbody Mounted	—

Suspension

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

Warranty

Feature	INFINITI	Mercedes-Benz
Basic Warranty	4 yr./ 60000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	6 yr./ 70000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	7 yr./ unlimited mi.	4 yr./ 50000 mi.
Roadside Assistance	4 yr./ 60000 mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	3 yr./ 45000 mi.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 INFINITI QX80 and 2026 Mercedes-Benz Amg Gt.

What is the main drivetrain difference between the two models?

The 2025 INFINITI QX80 is configured with a rear-wheel drive system, while the 2026 Mercedes-Benz Amg Gt comes standard with all-wheel drive. Both vehicles utilize a 9-speed shiftable automatic transmission.

How do the fuel requirements and economy compare?

The QX80 requires premium unleaded (recommended) and achieves 18 combined MPG (16 city/20 highway). The AMG GT requires premium unleaded (required) and slightly edges out the QX80 with 21 combined MPG (19 city/24 highway).

Is the 2026 Mercedes-Benz Amg Gt significantly smaller than the QX80?

Yes, the QX80 is considerably larger, being 211.2 inches long compared to the AMG GT's 199.0 inches, and significantly taller at 76.6 inches versus the AMG GT's 57.3 inches.

Which vehicle offers more usable space for cargo?

The QX80 provides 22 cubic feet of cargo capacity, which is notably greater than the AMG GT's 16.1 cubic feet. This difference supports the QX80’s larger overall body type.

Does the price difference reflect performance parity?

No, the $19,650 higher price for the AMG GT ($102,100) does not correlate with higher power; the QX80 is 88 hp stronger, producing 450 hp versus the AMG GT’s 362 hp.

Are both vehicles comparable in terms of luxury fuel requirement?

Both vehicles mandate the use of premium unleaded gasoline for optimal operation. The QX80 notes it as 'recommended' while the AMG GT lists it as 'required'.