Compare the2025 Lexus RXVS 2025 Infiniti QX50

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Environmental Friendliness
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Passenger Space
Cargo Capacity
Towing
Servicing Ease
Ergonomics
Model Availability
Recommendations

Safety

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The RX has a standard Secondary Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The QX50 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

The Lexus RX’s rear backup camera has a standard washer for maintaining a clear view under various conditions. In contrast, the Infiniti QX50 does not offer a rear camera washer, meaning its effectiveness relies on manual cleaning by the user when necessary.

Both the RX and QX50 have rear cross-traffic warning, but the RX has Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The QX50’s Rear Cross Traffic Alert doesn’t automatically brake.

The RX’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The QX50 doesn’t offer a driver alert monitor.

Both the RX and the QX50 have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, available all wheel drive and around view monitors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Lexus RX is safer than the Infiniti QX50:

	RX	QX50
	Driver
STARS	4 Stars	4 Stars
HIC	165	236
Neck Compression	17 lbs.	42 lbs.
	Passenger
STARS	4 Stars	4 Stars
Chest Compression	.6 inches	.6 inches
Neck Injury Risk	30.7%	31%
Neck Stress	160 lbs.	161 lbs.
Leg Forces (l/r)	454/389 lbs.	504/622 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Lexus RX is safer than the Infiniti QX50:

	RX	QX50
	Front Seat
STARS	5 Stars	5 Stars
HIC	58	98
Chest Movement	.3 inches	1 inches
Abdominal Force	99 lbs.	151 lbs.
Hip Force	206 lbs.	306 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	63	73
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	15 inches	17 inches
HIC	317	333

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Lexus RX is safer than the QX50:

	RX	QX50
Overall Evaluation	GOOD	ACCEPTABLE
Structure	GOOD	MARGINAL
	Driver Injury Measures
Head/Neck	GOOD	GOOD
Head Injury Criterion	97	141
Neck Compression	67 lbs.	89 lbs.
Torso	GOOD	ACCEPTABLE
Shoulder Deflection	.67 in	1.06 in
Torso Max Deflection	1.61 in	1.73 in
Torso Deflection Rate	5 MPH	9 MPH
Pelvis Force	1205 lbs.	1316 lbs.
Head Protection	GOOD	GOOD
	Passenger Injury Measures
Head/Neck	GOOD	GOOD
Neck Compression	45 lbs.	89 lbs.
Torso	GOOD	GOOD
Torso Max Deflection	1.3 in	1.42 in
Pelvis	GOOD	GOOD
Head Protection	GOOD	GOOD

Warranty

There are over 23 percent more Lexus dealers than there are Infiniti dealers, which makes it easier should you ever need service under the RX’s warranty.

Reliability

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Lexus RX Hybrid’s reliability 12 points higher than the QX50.

J.D. Power and Associates rated the RX second among midsize premium suvs in their 2024 Initial Quality Study. The QX50 isn’t in the top three in its category.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Lexus vehicles are better in initial quality than Infiniti vehicles. J.D. Power ranks Lexus above average in initial quality. With 13 more problems per 100 vehicles, Infiniti is rated lower.

J.D. Power and Associates’ 2024 survey of the owners of three-year-old vehicles provides the statistics that show that Lexus vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Lexus first in reliability, above the industry average. With 84 more problems per 100 vehicles, Infiniti is ranked 22nd.

Engine

The RX 350’s standard 2.4 turbo 4-cylinder produces 7 more horsepower (275 vs. 268) and 37 lbs.-ft. more torque (317 vs. 280) than the QX50’s 2.0 turbo 4-cylinder. The RX 450h+ Luxury’s standard 2.5 DOHC 4-cylinder hybrid produces 36 more horsepower (304 vs. 268) than the QX50’s 2.0 turbo 4-cylinder. The RX 500h F Sport Performance’s standard 2.4 turbo 4-cylinder hybrid produces 98 more horsepower (366 vs. 268) and 126 lbs.-ft. more torque (406 vs. 280) than the QX50’s 2.0 turbo 4-cylinder.

As tested in Motor Trend the RX 450h+ Luxury 2.5 DOHC 4-cylinder hybrid is faster than the Infiniti QX50:

	RX	QX50
Zero to 60 MPH	5.8 sec	6.9 sec
Quarter Mile	14.4 sec	15.4 sec
Speed in 1/4 Mile	97.1 MPH	91.6 MPH

Fuel Economy and Range

On the EPA test cycle the RX 450h+ running on electricity gets better mileage than the QX50 (91 city/75 hwy MPGe vs. 22 city/28 hwy).

On the EPA test cycle the RX running its gasoline engine gets better mileage than the QX50:

			MPG
RX
	FWD	350 2.4 turbo 4-cyl.	22 city/29 hwy
	AWD	350h 2.5 4-cyl. Hybrid	37 city/34 hwy
		450h+ 2.5 4-cyl. Hybrid	36 city/33 hwy
		500h 2.4 turbo 4-cyl. Hybrid	27 city/28 hwy
QX50
	AWD	2.0 turbo 4-cyl.	22 city/28 hwy

The RX 450h+ can travel with zero emissions for 37 miles. The QX50 can’t move without running its internal combustion engine.

Regenerative brakes improve the RX 350h/500h/450h+’s fuel efficiency by converting inertia back into energy instead of wasting it. The QX50 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the RX’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip (350 only). The QX50 doesn’t offer an automatic engine start/stop system.

The RX 350’s standard fuel tank has 1.8 gallons more fuel capacity than the QX50 (17.8 vs. 16 gallons).

Environmental Friendliness

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Lexus RX higher (6 out of 10) than the Infiniti QX50 (5). This means the RX produces up to 6.9 pounds less smog-producing pollutants than the QX50 every 15,000 miles.

Brakes and Stopping

For better stopping power the RX’s brake rotors are larger than those on the QX50:

	RX	RX 500h	QX50
Front Rotors	13.4 inches	15.7 inches	13 inches
Rear Rotors	13.4 inches	13.4 inches	12.1 inches

Tires and Wheels

For better ride, handling and brake cooling the RX offers optional 21-inch wheels. The QX50’s largest wheels are only 20-inches.

The RX has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the QX50; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.

Suspension and Handling

The RX F Sport Handling/Performance’s has front and rear gas-charged shocks for better control over choppy roads. The QX50’s suspension doesn’t offer front gas-charged shocks.

The RX offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The QX50’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the RX’s wheelbase is 2 inches longer than on the QX50 (112.2 inches vs. 110.2 inches).

For better handling and stability, the track (width between the wheels) on the RX is .8 inches wider in the front and 2.5 inches wider in the rear than the average track on the QX50.

For better maneuverability, the RX 500h F Sport Performance’s turning circle is 1 foot tighter than the QX50’s (35.4 feet vs. 36.4 feet).

Passenger Space

The RX has 1.5 inches more front legroom, 1.1 inches more front hip room, .2 inches more front shoulder room and 2.2 inches more rear hip room than the QX50.

Cargo Capacity

The RX’s cargo area is larger than the QX50’s in almost every dimension:

	RX	QX50
Length to seat (2nd/1st)	40”/76.2”	39”/71.7”
Max Width	55.5”	54.5”
Min Width	42”	41.5”
Height	30”	31.2”

Towing

The RX offers up to a 3500 lbs. towing capacity. The QX50 has no towing capacity.

Standard Trailer Sway Control on the RX uses the Vehicle Stability Control sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The QX50 doesn’t offer electronic trailer sway control.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Lexus service is better than Infiniti. J.D. Power ranks Lexus second in service department satisfaction. With a 19% lower rating, Infiniti is ranked 7th.

Ergonomics

Unlike the driver-only memory seat and mirrors in the QX50 Luxe/Sport, the RX 450h+ Luxury has a passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The RX’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The QX50 does not have an oil pressure gauge.

The RX offers an optional heads-up display that projects speed, navigation instruction and driver assistance information readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The QX50 doesn’t offer a heads-up display.

The power windows standard on both the RX and the QX50 have locks to prevent small children from operating them. When the lock on the RX is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The QX50 prevents the driver from operating the other windows just as it does the other passengers.

The RX’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The QX50’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The RX Luxury/500h F Sport offers available headlight washers to keep headlight output high. The QX50 doesn’t offer headlight washers.

To help drivers avoid possible obstacles, the RX offers optional cornering lights to illuminate around corners when the turn signals are activated. The QX50 doesn’t offer cornering lights. The RX also offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

The RX’s standard rear and side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The QX50 has an automatic rear view mirror, but its side mirrors don’t dim.

The Lexus RX has power folding mirrors that offer unparalleled convenience while maneuvering in tight places or parked. With the mirrors folded it’s easier to walk past and help prevent parking damage. The mirrors can be quickly unfolded when the driver is ready to leave. Power folding mirrors are only offered on the QX50 Luxe/Sport.

The RX has standard heated front seats. Heated front seats are only available on the QX50 Luxe/Sport. The RX also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the QX50.

The RX Premium/Luxury/F Sport has standard front air conditioned seats and the RX offers them optionally in the rear. This keeps the passengers comfortable and takes the sting out of hot seats in summer. The QX50 doesn’t offer air-conditioned seats in the rear.

The Lexus RX has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Homelink® is only available on the QX50 Luxe/Sport.

The RX 300h/450h+/500h offers an optional 115-volt a/c outlet in the cargo area, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The QX50 doesn’t offer a house-current electrical outlet.

The RX Premium+/Luxury/F Sport’s optional Advanced Park can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. Optional Remote Advanced Park will park and retrieve your car remotely: press a button and watch it park itself. This is ideal for tight locations. The QX50 doesn’t offer an automated parking system.

Model Availability

The RX is available in both front-wheel drive and four-wheel drive configurations. The QX50 doesn’t offer a two-wheel drive configuration.

Recommendations

Consumer Reports® recommends both the Lexus RX and the Infiniti QX50, based on reliability, safety and performance.

J.D. Power and Associates rated the RX first among midsize premium suvs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The QX50 isn’t in the top three.

The Lexus RX outsold the Infiniti QX50 by over 10 to one during 2024.

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