2025 Acura MDX vs 2025 INFINITI QX55

$51,200 · Crossover

$50,150 · Crossover

Comparison Overview

The 2025 Acura MDX bursts onto the scene with its muscular 290 horsepower and sophisticated 10-speed automatic transmission, promising a more robust driving feel, though its FWD configuration and 19/26 MPG fuel economy reflect that focus. Conversely, the 2025 INFINITI QX55 captivates with its sloped coupe-like design and efficiency, boasting an impressive 25 combined MPG and standard All-Wheel Drive, while delivering a healthy 280 lb-ft of torque from its powertrain. While the MDX is substantially longer at 198.4 inches compared to the QX55's 186.3 inches, the QX55 triumphs in utility, offering a massive 26.9 cu ft of cargo space against the Acura's 18.1 cu ft. Priced nearly identically at $51,200 for the MDX and $50,150 for the QX55, buyers must weigh the Acura's higher output against the INFINITI's superior efficiency and practicality.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 INFINITI QX55

The QX55 is the superior commuter due to its better 25 combined MPG and smaller footprint, making city driving easier.

👨‍👩‍👧‍👦 Best for Families

2025 Acura MDX

The MDX provides significantly more interior volume, offering 18.1 cu ft of cargo space in a longer 198.4-inch body suitable for family needs.

🏎️ Best for Enthusiasts

2025 Acura MDX

The MDX excites enthusiasts with 290 horsepower and a decisive 10-speed shiftable automatic transmission, compared to the QX55's 268 hp and CVT.

💰 Best Value

2025 INFINITI QX55

The QX55 provides better fuel economy (25 MPG combined vs 22 MPG) and standard AWD for only $1,050 less than the MDX.

Choose the Acura MDX if...

You prioritize raw engine power, benefiting from the MDX's 290 horsepower output.
You prefer the quick, distinct shifts of a traditional 10-speed automatic transmission.
You need the longer dimensions (198.4 inches) for a more commanding presence and potentially better rear-seat space.

Choose the INFINITI QX55 if...

Fuel economy is critical, as the QX55 achieves 25 combined MPG versus the MDX's 22.
You require maximum storage, utilizing the QX55's superior 26.9 cu ft of cargo capacity.
All-Wheel Drive is a necessity, which comes standard on the QX55 while the MDX is FWD standard.

Key Dimensions

Dimension	Acura MDX	INFINITI QX55
Length	198.4"	186.3"
Width	78.7"	74.9"
Height	67.9"	63.8"
Wheelbase	113.8"	110.2"

Features Comparison

Safety

Feature	Acura	INFINITI
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 Solid Disc Brakes	✓	—
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running 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	✓	✓
Dual Rear Side-Mounted Airbags	—	✓
Rear Ventilated Disc Brakes	—	✓
Front Fog Lights	—	✓

Engine

Feature	Acura	INFINITI
Base Engine Displacement	3.5 L	2.0 L
Number of Cylinders	V6	inline 4
Base Engine Type	gas	gas
Horsepower	290 hp @ 6200 rpm	268 hp @ 5600 rpm
Torque	267 lb-ft @ 4700 rpm	280 lb-ft @ 4800 rpm
Number of Valves	24	16
Camshaft Type	Single overhead cam (SOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓
Cylinder Deactivation	✓	—

Drive Train

Feature	Acura	INFINITI
Transmission Type	10-speed shiftable automatic	continuously variable-speed automatic
Drivetrain Type	front wheel drive	all wheel drive
Center Differential Type	—	Limited Slip

Fuel

Feature	Acura	INFINITI
Fuel Type	premium unleaded (recommended)	premium unleaded (recommended)
EPA Fuel Economy (City/Highway)	19/26 MPG	22/28 MPG
EPA Fuel Economy (Combined)	22 MPG	25 MPG
EPA Driving Range (City/Highway)	351.5/481.0 mi.	352.0/448.0 mi.
Fuel Tank Capacity	18.5 gal.	16.0 gal.

Comfort & Convenience

Feature	Acura	INFINITI
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	✓	✓
Rear View Camera	✓	✓
Wireless Charging Pad	✓	✓
Adaptive Cruise Control	✓	✓
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Power Rear Seat Easy Entry	✓	—
Leather Steering Wheel	✓	✓
Three Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	—
Interior Air Filtration	✓	—
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Rear Parking Sensors	—	✓
Dual Zone Climate Control	—	✓
Rear Ventilation Ducts	—	✓
Dual Vanity Mirrors	—	✓

In Car Entertainment

Feature	Acura	INFINITI
Infotainment Display	12.3 in	8.0 in
AM/FM Stereo	✓	✓
Speaker System	11	6
Android Auto (Wireless)	✓	—
Apple CarPlay (Wireless)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Speed Sensitive Volume Control	✓	—
Android Auto (Wired)	—	✓
Apple CarPlay (Wired)	—	✓
Satellite Radio	—	✓
Satellite Radio Trial Period	—	3 months

Power Feature

Feature	Acura	INFINITI
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	Acura	INFINITI
Front Head Room	38.5 in.	39.9 in.
Front Leg Room	41.6 in.	39.6 in.
Front Shoulder Room	61.9 in.	57.9 in.
Front Hip Room	59.3 in.	55.6 in.
Seat Material: Leatherette	✓	—
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	3	2
Passenger Seat Power Adjustments	8-way	8-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Seat Material: Leather	—	✓

Rearseats

Feature	Acura	INFINITI
Rear Head Room	38.1 in.	36.9 in.
Rear Leg Room	38.5 in.	38.7 in.
Rear Shoulder Room	60.3 in.	57.1 in.
Rear Hip Room	57.8 in.	53.8 in.
Split-Folding Rear Seatback	✓	✓
Reclining Rear Seats	✓	✓
Folding Center Armrest	✓	✓
Manual Folding Third Row Seat	✓	—

Tires and Wheels

Feature	Acura	INFINITI
Wheel Material	Alloy	—
Wheel Size	19 x 8.5 in	—
Tire Type	All Season	—
Tire Size	255/55R19	255/45R20
Wheel Finish	—	Painted Alloy
Wheel Diameter	—	20 in.
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	Acura	INFINITI
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 60000 mi.
Drivetrain Warranty	6 yr./ 70000 mi.	6 yr./ 70000 mi.
Corrosion/Rust Warranty	5 yr./ unlimited mi.	7 yr./ unlimited mi.
Roadside Assistance	4 yr./ 50000 mi.	4 yr./ 60000 mi.
Complimentary Scheduled Maintenance	1 yr./ 12000 mi.	3 yr./ 22500 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Acura MDX and 2025 INFINITI QX55.

How much more cargo space does the QX55 offer compared to the MDX?

The 2025 INFINITI QX55 is substantially more accommodating for luggage, offering 26.9 cubic feet of cargo capacity. This is significantly more than the 2025 Acura MDX's 18.1 cubic feet, making the QX55 better for hauling.

Which vehicle is geared more towards spirited driving performance?

The 2025 Acura MDX holds the edge in outright power with 290 horsepower, paired with a more engaging 10-speed shiftable automatic transmission. The QX55 offers less horsepower at 268 hp and uses a continuously variable transmission.

Is there a significant fuel economy difference between these two crossovers?

Yes, the QX55 is more efficient, achieving 25 combined MPG (22/28 city/highway). The MDX trails slightly at 22 combined MPG (19/26 city/highway), which is expected given its higher power output.

Does one car come standard with All-Wheel Drive?

The 2025 INFINITI QX55 comes standard with All-Wheel Drive, enhancing traction in poor weather. The 2025 Acura MDX uses a Front Wheel Drive configuration as its base setup.

What is the price difference, and is the more expensive car better equipped for families?

The MDX has an MSRP of $51,200, making it $1,050 more expensive than the QX55 at $50,150. While the MDX is longer, the QX55 offers superior cargo volume for family gear.

How does the torque output compare between the two vehicles?

Despite having less horsepower, the 2025 INFINITI QX55 produces higher torque at 280 lb-ft, compared to the Acura MDX's 267 lb-ft. This might provide a punchier initial response off the line.