Compare the2024 BMW X3VS 2024 Infiniti QX55

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

Safety

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The X3’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The QX55 doesn’t offer pre-crash pretensioners.

The X3 has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The QX55 doesn’t offer a whiplash protection system.

The X3 has a standard PostCrash iBrake, 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.

When descending a steep, off-road slope, the X3’s standard Hill Descent Control allows you to creep down safely. The QX55 doesn’t offer Hill Descent Control.

The X3’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 X3 and the QX55 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, 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 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 BMW X3 is safer than the Infiniti QX55:

	X3	QX55
	Driver
STARS	5 Stars	5 Stars
HIC	102	384
Neck Injury Risk	21%	36%
Neck Stress	202 lbs.	439 lbs.
Neck Compression	64 lbs.	95 lbs.
Leg Forces (l/r)	116/280 lbs.	983/651 lbs.
	Passenger
STARS	5 Stars	4 Stars
HIC	176	285
Chest Compression	.6 inches	1.2 inches
Neck Stress	139 lbs.	219 lbs.
Neck Compression	72 lbs.	78 lbs.
Leg Forces (l/r)	183/114 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 BMW X3 is safer than the QX55:

	X3	QX55
Overall Evaluation	GOOD	ACCEPTABLE
Structure	GOOD	MARGINAL
	Driver Injury Measures
Head/Neck	GOOD	GOOD
Head Injury Criterion	45	141
Neck Compression	45 lbs.	89 lbs.
Torso	GOOD	ACCEPTABLE
Shoulder Deflection	.59 in	1.06 in
Torso Max Deflection	.98 in	1.73 in
Torso Deflection Rate	7 MPH	9 MPH
Pelvis	ACCEPTABLE	MARGINAL
Pelvis Force	1049 lbs.	1316 lbs.
Head Protection	GOOD	GOOD
	Passenger Injury Measures
Head/Neck	GOOD	GOOD
Torso	GOOD	GOOD
Shoulder Deflection	.16 in	.67 in
Shoulder Force	112 lbs.	201 lbs.
Torso Max Deflection	.67 in	1.42 in
Pelvis	GOOD	GOOD
Head Protection	GOOD	GOOD

The BMW X3 has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2024 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and a “Good” score in the revised pedestrian crash prevention test. The QX55 is not even a standard “Top Safety Pick” for 2024.

Warranty

The X3’s corrosion warranty is 5 years longer than the QX55’s (12 vs. 7 years).

There are over 73 percent more BMW dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the X3’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 X3’s reliability 23 points higher than the QX55.

J.D. Power and Associates’ 2023 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Infiniti vehicles. With 20 fewer problems per 100 vehicles, JD Power ranks BMW higher than Infiniti.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Infiniti vehicles. J.D. Power ranks BMW above average in long-term dependability. With 5 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 BMW vehicles are more reliable than Infiniti vehicles. Consumer Reports ranks BMW 4 places higher in reliability than Infiniti.

Engine

The X3 M40i’s standard 3.0 turbo 6-cylinder hybrid produces 114 more horsepower (382 vs. 268) and 89 lbs.-ft. more torque (369 vs. 280) than the QX55’s 2.0 turbo 4-cylinder.

Fuel Economy and Range

Regenerative brakes improve the X3’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 X3’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. The QX55 doesn’t offer an automatic engine start/stop system.

The X3 has 1.2 gallons more fuel capacity than the QX55 (17.2 vs. 16 gallons), for longer range between fill-ups.

Transmission

The X3 M40i’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The QX55 doesn’t offer launch control.

Brakes and Stopping

For better stopping power the X3 M40i’s brake rotors are larger than those on the QX55:

	X3 M40i	QX55
Front Rotors	13.7 inches	13 inches
Rear Rotors	13.5 inches	12.1 inches

Tires and Wheels

The X3’s optional 245/40R21 front and 275/35R21 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the QX55’s 45 series tires.

For better ride, handling and brake cooling the X3 offers optional 21-inch wheels. The QX55’s largest wheels are only 20-inches.

The X3 offers an optional 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 QX55; 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 X3 has standard front and rear gas-charged shocks for better control over choppy roads. The QX55’s suspension doesn’t offer gas-charged shocks.

The X3 offers an optional 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 QX55’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the X3’s wheelbase is 2.6 inches longer than on the QX55 (112.8 inches vs. 110.2 inches).

The X3’s front to rear weight distribution is more even (49% to 51%) than the QX55’s (57.7% to 42.3%). This gives the X3 more stable handling and braking.

Chassis

The front grille of the X3 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The QX55 doesn’t offer active grille shutters.

Passenger Space

The X3 has .8 inches more front headroom, .7 inches more front legroom and 1.6 inches more rear headroom than the QX55.

Cargo Capacity

The X3 has a much larger cargo volume with its rear seat up than the QX55 with its rear seat up (28.7 vs. 26.9 cubic feet). The X3 has a much larger cargo volume with its rear seat folded than the QX55 with its rear seat folded (62.7 vs. 54.1 cubic feet).

A low lift-over cargo hatch design makes loading and unloading the X3 easier. The X3’s cargo hatch lift-over height is 28.5 inches, while the QX55’s liftover is 29.9 inches.

Towing

The X3 has a 4400 lbs. towing capacity. The QX55 has no towing capacity.

Servicing Ease

The engine in the X3 is mounted longitudinally (North-South), instead of sideways, as in the QX55. This makes it easier to service and maintain, because the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that BMW service is better than Infiniti. J.D. Power ranks BMW 7th in service department satisfaction (above the industry average). With a 4% lower rating, Infiniti is ranked 9th.

Ergonomics

The power windows standard on both the X3 and the QX55 have locks to prevent small children from operating them. When the lock on the X3 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The QX55 prevents the driver from operating the other windows just as it does the other passengers.

The X3’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 QX55’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

Manual rear side window sunshades are available in the X3 to help block heat and glare for the rear passengers. The QX55 doesn’t offer rear side window sunshades.

The X3’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 QX55 has an automatic rear view mirror, but its side mirrors don’t dim.

The X3’s optional Parking Assistant Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The QX55 doesn’t offer an automated parking system.

Model Availability

The X3 is available in both rear-wheel drive and four-wheel drive configurations. The QX55 doesn’t offer a two-wheel drive configuration.

Economic Advantages

Insurance will cost less for the X3 owner. The Complete Car Cost Guide estimates that insurance for the X3 will cost $1265 less than the QX55 over a five-year period.

The X3 will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the X3 will retain 50.69% to 52.37% of its original price after five years, while the QX55 only retains 46.84% to 46.91%.

Recommendations

Consumer Reports® recommends the BMW X3, based on reliability, safety and performance.

The BMW X3 outsold the Infiniti QX55 by almost 12 to one during 2023.