Compare the2024 Audi A6 AllroadVS 2023 Infiniti QX55

Safety
Warranty
Engine
Fuel Economy and Range
Transmission
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Chassis
Passenger Space
Cargo Capacity
Servicing Ease
Ergonomics
Recommendations

Safety

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The A6 Allroad’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.

Both the A6 Allroad and QX55 have child safety locks to prevent children from opening the rear doors. The A6 Allroad has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The QX55’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

The A6 Allroad has a standard Secondary Collision Brake Assist, 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 A6 Allroad’s standard Hill Descent Control allows you to creep down safely. The QX55 doesn’t offer Hill Descent Control.

A passive infrared night vision system optional on the A6 Allroad Prestige helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The QX55 doesn’t offer a night vision system.

Both the A6 Allroad and QX55 offer rear cross-traffic warning, but the A6 Allroad with Rear Cross-Traffic Assist also has Automatic Brake Activation (automatically applies the brakes) to better prevent a collision when backing near traffic. The QX55’s Rear Cross Traffic Alert doesn’t automatically brake.

Both the A6 Allroad 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, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras and available blind spot warning systems.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Audi A6 Allroad is safer than the Infiniti QX55:

	A6 Allroad	QX55
	Driver
STARS	5 Stars	5 Stars
HIC	197	384
Neck Injury Risk	30%	36%
Neck Stress	322 lbs.	439 lbs.
Neck Compression	64 lbs.	95 lbs.
Leg Forces (l/r)	292/435 lbs.	983/651 lbs.
	Passenger
STARS	4 Stars	4 Stars
Chest Compression	.5 inches	1.2 inches
Leg Forces (l/r)	263/331 lbs.	452/534 lbs.

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

For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the A6 Allroad its highest rating: “Top Safety Pick Plus” for 2022, a rating granted to only 128 vehicles tested by the IIHS. The QX55 has not been fully tested, yet.

Warranty

The A6 Allroad’s corrosion warranty is 5 years longer than the QX55’s (12 vs. 7 years).

There are over 50 percent more Audi dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the A6 Allroad’s warranty.

Engine

The A6 Allroad’s 3.0 turbo V6 hybrid produces 67 more horsepower (335 vs. 268) and 89 lbs.-ft. more torque (369 vs. 280) than the QX55’s 2.0 turbo 4-cylinder.

Fuel Economy and Range

On the EPA test cycle the A6 Allroad gets better fuel mileage than the QX55 (22 city/30 hwy vs. 22 city/28 hwy).

Regenerative brakes improve the A6 Allroad’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 A6 Allroad’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 A6 Allroad has 3.3 gallons more fuel capacity than the QX55 (19.3 vs. 16 gallons), for longer range between fill-ups.

Transmission

The A6 Allroad’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 A6 Allroad’s brake rotors are larger than those on the QX55:

	A6 Allroad	QX55
Front Rotors	14.8 inches	13 inches
Rear Rotors	13 inches	12.1 inches

Tires and Wheels

The A6 Allroad 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 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 A6 Allroad 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 front and rear suspension of the A6 Allroad uses air springs for a smoother, controlled ride than the QX55, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The A6 Allroad has a standard 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. The QX55’s suspension doesn’t offer adjustable shock absorbers.

The A6 Allroad has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The A6 Allroad’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The QX55 doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the A6 Allroad’s wheelbase is 5 inches longer than on the QX55 (115.2 inches vs. 110.2 inches).

Chassis

The design of the Audi A6 Allroad amounts to more than styling. The A6 Allroad has an aerodynamic coefficient of drag of .31 Cd. That is significantly lower than the QX55 (.35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the A6 Allroad get better fuel mileage.

Passenger Space

The A6 Allroad has 1.7 inches more front legroom and 2.6 inches more rear headroom than the QX55.

Cargo Capacity

The A6 Allroad has a much larger cargo volume with its rear seat up than the QX55 with its rear seat up (30 vs. 26.9 cubic feet). The A6 Allroad has a much larger cargo volume with its rear seat folded than the QX55 with its rear seat folded (63.8 vs. 54.1 cubic feet).

A low lift-over trunk design makes loading and unloading the A6 Allroad easier. The A6 Allroad’s trunk lift-over height is 25 inches, while the QX55’s liftover is 29.9 inches.

Servicing Ease

The engine in the A6 Allroad 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 Audi service is better than Infiniti. J.D. Power ranks Audi 8th in service department satisfaction (above the industry average). With a 3% lower rating, Infiniti is ranked 9th.

Ergonomics

Unlike the driver-only memory system in the QX55 Essential/Sensory, the A6 Allroad Prestige offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle and climate settings and the front passenger seat also adjusts to the new passenger’s preset preferences.

The power windows standard on both the A6 Allroad and the QX55 have locks to prevent small children from operating them. When the lock on the A6 Allroad 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 A6 Allroad’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.

Heated windshield washer nozzles are standard on the A6 Allroad to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The QX55 doesn’t offer heated windshield washer nozzles.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The A6 Allroad has standard headlight washers to keep headlight output high. The QX55 doesn’t offer headlight washers.

Manual rear side window sunshades are available in the A6 Allroad to help block heat and glare for the rear passengers. The QX55 doesn’t offer rear side window sunshades.

The A6 Allroad’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.

Both the A6 Allroad and the QX55 have standard heated front seats. The A6 Allroad also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the QX55.

The A6 Allroad has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel is only available on the QX55 Essential/Sensory.

The A6 Allroad Prestige offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the QX55.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi A6 Allroad has a standard wireless phone charging system (Qi) in the center console. The QX55 doesn’t offer wireless personal charging.

The A6 Allroad Prestige’s Park Assist Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. Remote Park Assist Plus will park and retrieve your car remotely: press a button and watch it park itself. This is ideal for tight locations. The QX55 doesn’t offer an automated parking system.

Recommendations

Consumer Reports® recommends the Audi A6 Allroad, based on reliability, safety and performance.

The Audi A6/S6/RS 6 outsold the Infiniti QX55 by 18% during 2022.

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