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2005 Infiniti QX56 Road Test
Date Published: 7/31/08
Our road test for the 2005 Infiniti QX56 includes a full evaluation of the 2005 Infiniti QX56 from the inside out. We evaluate not only engine and handling performance for the 2005 Infiniti QX56, but also interior cabin and cargo space. Let our comprehensive road test ratings for the 2005 Infiniti QX56 help you decide if a 2005 Infiniti QX56 is right for you.
2005 Infiniti QX56 Road Test
Consumer Guide® Road Test Ratings
Acceleration

4WD w/nav. sys. Class Average
5 5.1

QX56 weighs several hundred pounds more than Armada. It's no neck-snapper, but getaways and passing sprints are reasonably brisk for a big, heavy SUV. Too-sensitive throttle pedal on one test example caused unseemly leaps away from a stop. Maximum towing capacity is 8900 lb.
Fuel Economy

4WD w/nav. sys. Class Average
2 2

Test QX56 averaged 12.9 mpg in mix of city/highway driving. Infiniti recommends premium-grade fuel.
Ride Quality

4WD w/nav. sys. Class Average
6 5.8

A tad smoother than Armada, but rough roads still induce shuddery jiggle--typical of body-on-frame trucks with big wheels and tires. Still, QX56 smothers most small bumps and stays reasonably flat over large swells. One test example suffered suspension creaking over low-speed bumps.
Steering/Handling/Braking

4WD w/nav. sys. Class Average
4 3.4

Big-truck ponderous, especially in close quarters, but QX56 is capable on winding roads within its limits. Very good straightline stability, though some testers say steering lacks sharp on-center feel. AWD can be locked in rear-wheel drive, 4-wheel High, or 4-wheel Low; "Auto" setting selects 2WD or 4WD as needed.
Quietness

4WD w/nav. sys. Class Average
6 6

Extra sound deadening makes QX56 a bit quieter than Armada, but engine roar still noticed in full-throttle acceleration. Tire thrum intrudes some on coarse pavement. Wind rush subdued.
Controls

4WD w/nav. sys. Class Average
5 5.6

An abundance of controls, and not always optimally arranged or identified. Some mounted on horizontal surfaces, others on vertical panels. Central audio and navigation controls mimic those of other Infinitis, take a little time to learn, and the three-knob climate system isn't as simple as it looks. Gauges and navigation screen well-placed, but can wash out in certain light conditions. Where Armada's cabin is plain, aluminum and wood accents give QX56 more-upscale ambience befitting a luxury SUV. Still, some knobs have cheap, hollow feel.
Room/Comfort/Driver Seating (front)

4WD w/nav. sys. Class Average
9 8.1

Big-rig-steep step-in not fully offset by standard running boards. Occupants ride high on wide, supportive seats with ample head and leg room. Included power-adjustable seat, pedals, and tilt steering wheel are boons for driver comfort. Generally good visibility, but tall stance hides close-by objects. Rear-window tinting heavy, so standard rear obstacle detection and available rearview camera helpful.
Room/Comfort (rear)

4WD w/nav. sys. Class Average
7 6.7

Running boards help mitigate another lofty step-in, but not the high-mount outer door handles or narrowish entryways shared with Armada. Bountiful 2nd-row space, but seats ordinary for shape and support. They tilt up for 3rd-row access, which is tight for adults. Adults likely will also dislike 3rd-row's hard, flat bench seat and limited space.
Cargo Room

4WD w/nav. sys. Class Average
8 7.8

High load floor, as in Armada, but QX56 includes handy power liftgate. Only grocery-bag space behind 3rd-row seat, plus modest under-floor storage. Third-row backrest flops down to extend load deck; 2nd row requires rotating cushions, then dropping seatbacks, but no headrests need be removed. Right-front seatback also folds for extra-long cargo. Numerous bins, pockets, and beverage holders, so great small-items storage.
Value within Class

4WD w/nav. sys. Class Average
5 4.6

Though it doesn't trounce the competition any more than Armada does in its field, QX56 is a capable big rig. And it costs little more than a loaded Armada. Both suffer the usual sumo-SUV woes, especially poor fuel economy. But the Infiniti boasts a more upscale air, longer warranty, and the promise of superior customer service.
Total Score

4WD w/nav. sys. Class Average
57 55.1
Scores for all Premium Large Sport-utility Vehicles

Low Score
23
Average Score
55
High Score
64
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