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Compare the2024 Lexus RXVS 2023 Infiniti QX50

2024 Lexus RX
2023 Infiniti QX50

Safety

© 1999 - 2025Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (“Advanta-STAR”). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2025/01/22

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.

Both the RX and QX50 have rear cross-traffic warning, but the RX offers optional 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.

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

For its performance in IIHS driver-side and passenger-side small overlap frontal, moderate overlap frontal, updated side impact, headlight, daytime pedestrian crash prevention, and nighttime pedestrian crash prevention testing, the Insurance Institute for Highway Safety grants the RX its highest rating: “Top Safety Pick Plus” for 2023, a rating granted to only 50 vehicles tested by the IIHS. The QX50 has not been fully tested, yet.

Warranty

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There are over 20 percent more Lexus dealers than there are Infiniti dealers, which makes it easier should you ever need service under the RX’s warranty.

Reliability

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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 RX’s reliability 20 points higher than the QX50.

J.D. Power and Associates’ 2023 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 41 more problems per 100 vehicles, Infiniti is rated below average.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Lexus vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Lexus above average in long-term dependability. With 33 more problems per 100 vehicles in the first three years of ownership, Infiniti is rated below average.

Engine

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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+’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 500h F Sport Performance 2.4 turbo 4-cylinder hybrid is faster than the Infiniti QX50:

RX

QX50

Zero to 60 MPH

5.9 sec

6.7 sec

Quarter Mile

14.4 sec

15.2 sec

Speed in 1/4 Mile

97.1 MPH

91.8 MPH

Fuel Economy and Range

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

MPG

RX

AWD

350h 2.5 4-cyl. Hybrid

37 city/34 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/450+’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

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Lexus RX higher (7 out of 10) than the Infiniti QX50 (6). This means the RX produces up to 1.1 pounds less smog-producing pollutants than the QX50 every 15,000 miles.

Brakes and Stopping

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

RX

RX F Sport

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

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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

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The RX F Sport’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

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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

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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

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Maximum trailer towing in the Infiniti QX50 is limited to 3000 pounds. The RX offers up to a 3500 lbs. 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

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J.D. Power and Associates surveys of service recipients show that Lexus service is better than Infiniti. J.D. Power ranks Lexus first in service department satisfaction. With a 35% lower rating, Infiniti is ranked 9th.

Ergonomics

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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 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.

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 RX Hybrid 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.

Recommendations

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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 almost 9 to one during 2022.

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