Compare the2026 Acura ADXVS 2025 Infiniti QX55

Using vehicle speed sensors and seat sensors, smart airbags in the ADX deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The ADX’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.

In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Acura ADX achieved a “Acceptable” rating - the second highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Infiniti QX55 has not been tested.

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

The ADX’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 ADX 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, 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 Acura ADX is safer than the QX55:

The Acura ADX achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2025 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated moderate overlap front crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The QX55 is not a “Top Safety Pick” for 2025.

There are over 39 percent more Acura dealers than there are Infiniti dealers, which makes it easier should you ever need service under the ADX’s warranty.

J.D. Power and Associates’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that Acura vehicles are better in initial quality than Infiniti vehicles. With 44 fewer problems per 100 vehicles, JD Power ranks Acura higher than Infiniti.

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

In heavy traffic or at stoplights the ADX’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.

To lower fuel costs and make buying fuel easier, the Acura ADX uses regular unleaded gasoline (premium recommended for maximum performance). The QX55 requires premium, which can cost on average about 84.9 cents more per gallon.

The ADX has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The QX55 doesn’t offer a cap-less fueling system.

The ADX AWD has a standard space-saver spare (not available on FWD) 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.

The Acura ADX may be more efficient, handle and accelerate better because it weighs about 500 to 700 pounds less than the Infiniti QX55.

The front grille of the ADX 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.

The ADX has 2.3 inches more front legroom and 1.1 inches more rear headroom than the QX55.

The ADX has a larger cargo volume with its rear seat folded than the QX55 with its rear seat folded (55.1 vs. 54.1 cubic feet).

A low lift-over cargo hatch design makes loading and unloading the ADX easier. The ADX’s cargo hatch lift-over height is 27 inches, while the QX55’s liftover is 29.9 inches.

J.D. Power and Associates surveys of service recipients show that Acura service is better than Infiniti. J.D. Power ranks Acura 6th in service department satisfaction (above the industry average). With a 4% lower rating, Infiniti is ranked 7th.

Both the Acura ADX and Infiniti QX55 offer exterior mirrors that can be folded to provide convenience. The ADX offers available power folding mirrors, which allow for easy, one-touch folding or unfolding at the driver’s discretion. This provides added convenience when maneuvering or parking, as well as when walking past the parked vehicle. In comparison, the QX55’s foldable mirrors are manual, requiring the driver to get out and physically fold them once parked and unfold them before getting in.

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

The Acura ADX outsold the Infiniti QX55 by almost 9 to one during 2025.