Compare the2024 Lexus UXVS 2024 Infiniti QX55

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Using vehicle speed sensors and seat sensors, smart airbags in the UX deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The UX’s side airbags will shut off if a child is leaning against the door. The QX55’s side airbags don’t have smart features and will always deploy full force.

The UX has standard Whiplash Injury Lessening Front Seatbacks, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash Injury Lessening Front Seatbacks system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The QX55 doesn’t offer a whiplash protection system.

The UX 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 QX55 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 UX’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 QX55 doesn’t offer a driver alert monitor.

Both the UX and the QX55 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, plastic fuel tanks, 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 rear parking sensors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Lexus UX is safer than the Infiniti QX55:

	UX	QX55
	Passenger
STARS	4 Stars	4 Stars
Chest Compression	.7 inches	1.2 inches
Neck Injury Risk	36%	37%
Neck Stress	163 lbs.	219 lbs.
Leg Forces (l/r)	345/566 lbs.	452/534 lbs.

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 UX is safer than the QX55:

	UX	QX55
Overall Evaluation	GOOD	ACCEPTABLE
Structure	GOOD	MARGINAL
	Driver Injury Measures
Head/Neck	GOOD	GOOD
Neck Compression	67 lbs.	89 lbs.
Torso	GOOD	ACCEPTABLE
Shoulder Deflection	.83 in	1.06 in
Torso Max Deflection	1.02 in	1.73 in
Torso Deflection Rate	7 MPH	9 MPH
Pelvis	GOOD	MARGINAL
Pelvis Force	892 lbs.	1316 lbs.
Head Protection	GOOD	GOOD
	Passenger Injury Measures
Head/Neck	GOOD	GOOD
Neck Compression	67 lbs.	89 lbs.
Torso	GOOD	GOOD
Torso Deflection Rate	6 MPH	7 MPH
Head Protection	GOOD	GOOD

The Lexus UX achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The QX55 is not a “Top Safety Pick” for 2024.

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There are over 21 percent more Lexus dealers than there are Infiniti dealers, which makes it easier should you ever need service under the UX’s warranty.

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The battery on the UX is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the UX’s battery 20 to 30 degrees cooler, its life is increased by years. The QX55’s battery is in the hot engine compartment.

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 UX’s reliability 33 points higher than the QX55.

J.D. Power and Associates rated the UX second among small premium suvs in their 2023 Initial Quality Study. The QX55 isn’t in the top three in its category.

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.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Lexus vehicles are more reliable than Infiniti vehicles. Consumer Reports ranks Lexus first in overall reliability. Infiniti is ranked 13th.

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On the EPA test cycle the UX gets better mileage than the QX55:

			MPG
UX
	FWD	2.0 4-cyl. Hybrid	43 city/41 hwy
	AWD	2.0 4-cyl. Hybrid	41 city/38 hwy
QX55
	AWD	2.0 turbo 4-cyl.	22 city/28 hwy

Regenerative brakes improve the UX’s fuel efficiency by converting inertia back into energy instead of wasting it. The QX55 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the UX’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. The QX55 doesn’t offer an automatic engine start/stop system.

To lower fuel costs and make buying fuel easier, the Lexus UX uses regular unleaded gasoline. The QX55 requires premium, which can cost on average about 82.8 cents more per gallon.

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Lexus UX higher (7 out of 10) than the Infiniti QX55 (6). This means the UX produces up to 1.1 pounds less smog-producing pollutants than the QX55 every 15,000 miles.

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The UX has standard front and rear gas-charged shocks for better control over choppy roads. The QX55’s suspension doesn’t offer gas-charged shocks.

For better maneuverability, the UX’s turning circle is 2.2 feet tighter than the QX55’s (34.2 feet vs. 36.4 feet).

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The Lexus UX may be more efficient, handle and accelerate better because it weighs about 500 to 600 pounds less than the Infiniti QX55.

The UX is 9.3 inches shorter than the QX55, making the UX easier to handle, maneuver and park in tight spaces.

The design of the Lexus UX amounts to more than styling. The UX has an aerodynamic coefficient of drag of .33 Cd. That is lower than the QX55 (.35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the UX get better fuel mileage.

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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.

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In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The UX offers available headlight washers to keep headlight output high. The QX55 doesn’t offer headlight washers.

The UX’s optional 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 QX55 has an automatic rear view mirror, but its side mirrors don’t dim.

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The UX is available in both front-wheel drive and four-wheel drive configurations. The QX55 doesn’t offer a two-wheel drive configuration.

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Insurance will cost less for the UX owner. The Complete Car Cost Guide estimates that insurance for the UX will cost $765 to $3255 less than the QX55 over a five-year period.

The UX will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the UX will retain 58.35% to 60.33% of its original price after five years, while the QX55 only retains 46.84% to 46.91%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Lexus UX will be $21907 to $22156 less than for the Infiniti QX55.

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Consumer Reports® recommends the Lexus UX, based on reliability, safety and performance.

The Lexus UX outsold the Infiniti QX55 by over two to one during 2023.