Overview & Reviews

Exemplifying the "bigger is better" school of thought, the Infiniti QX56 is a worthy competitor among full-size luxury SUVs. Through the course of two generations, the QX56 benefited from a powerful V8 engine and above-average towing capabilities. Off-road prowess, on the other hand, was never a primary concern, as the QX56 was intended more for urban recreation or pulling a boat to the river. For scenarios such as those, the QX56 managed quite well, with a comfortable cabin and myriad high-tech features.

The first-generation QX56 suffered from some less-than-luxurious interior materials and less cargo capacity, but the second-generation model addressed those shortcomings. As the QX was designed to be more of a versatile and foul-weather-capable luxury transport than a wilderness tamer, rugged outdoorsmen may want to look elsewhere. But those seeking a well-appointed used luxury SUV should be well served by either of the brawny Infiniti QX56 generations.

Note that for 2012 this model's name was changed to QX and then again for 2014 to QX80. They are covered in separate reviews.

Used Infiniti QX56 Models
The last Infiniti QX56 generation was technically only produced for 2011, when this vehicle was completely redesigned. However, it continued on with minimal changes under the new names mentioned above, so used shoppers won't be missing out on much. Compared to the older model, this second-generation QX56 boasts better handling, greater refinement and more power. It is based on an off-road-ready Nissan SUV available in other markets rather than a full-size pickup truck like the first QX56 was.

This full-size luxury SUV seats seven or eight passengers and came loaded with a wealth of standard features like 20-inch wheels, xenon headlights, tri-zone automatic climate control, a top-view camera system, a power-folding third-row bench seat and a 13-speaker Bose audio system. Optional highlights included an active suspension system, a twin-screen rear entertainment system, ventilated front seats, adaptive cruise control and a host of high-tech safety features designed to either prevent a crash or protect the occupants in the event of one.

A 5.6-liter V8 with 400 horsepower and 413 pound-feet of torque powers the QX56. A seven-speed automatic is the only transmission offered and features manual shift control with rev-matched downshifts. Rear-wheel drive is standard, with four-wheel drive optional. Properly equipped, the QX can tow an impressive 8,500 pounds and is aided by a tow/haul mode for the transmission as well as an automatic-leveling rear suspension.

In reviews, we found this QX56 to be a pretty impressive luxury SUV, with the large collection of features and potent V8 being the main draws. Downsides include cramped third-row seating and a ride quality that's not as smooth as what's provided by competing models.

The first-generation QX56 debuted for the 2004 model year and lasted until 2010. It shared its chassis and other major mechanicals with the Armada SUV and Titan pickup. Under the hood the QX came with a 5.6-liter V8 that produced 320 hp and 393 lb-ft of torque. A five-speed automatic was standard, and buyers could choose between rear-wheel- and four-wheel drive. There was only one available trim level, and pretty much every feature was standard. The few notable options included a rear-seat entertainment system, adaptive cruise control and a sunroof.

Infiniti made only minor changes early on, including a 60/40 split for the third-row seat, a standard Bluetooth hands-free system and enhanced exterior mirrors for 2006. The biggest changes occurred for '08, when subtle styling changes and a significant interior redesign made it look and feel like a more upscale vehicle, with improved materials quality and a new instrument cluster design. That year, the standard equipment list grew and the audio and navigation systems were updated.

In road tests, our editors praised the Infiniti QX56 for its refined powertrain, smooth ride and family-friendly passenger quarters. Acceleration was impressive and fuel economy, though dismal, was at least comparable to other full-size SUVs. However, many of its competitors offered a better mix of everything. Models previous to 2008 were also let down by lackluster interior quality.

User Reviews:

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  Great - 2011 Infiniti QX56
  By JW - April 11 - 2:20 pm

  Considered the Lexus, Range Rover, MB GL and there was not even a comparison in my mind.

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  Best full size luxury SUV out there! - 2005 Infiniti QX56
  By Paul - April 10 - 12:20 pm

  I did extensive research before this purchase and Im very pleased with the results. The fit, finish, and comfort features are second to none. Many of the luxury options on this vehicle are standard compared to others (Cadillac, Lincoln, Land Rover, Lexus, Denali), and you wont find as many on the road which makes it unique! Although Nissan makes the similar Armada for about $7K less, this one has all of the bells and whistles, the engine is smooth, quiet and more powerful. Before you go and buy an escalade or Navigator, stop by your Infiniti dealer...youll end up with one in your garage (if it will acutally fit in it!!)

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  Incredible new vehicle without peers - 2011 Infiniti QX56
  By Johnhw2 - March 23 - 11:53 pm

  Love this vehicle. It is without peers. Owned a 2008 QX and loved its size, luxury and reliability but this new design is an upgrade across the board. More power 400 HP with 0-60 in 6.2 seconds yet fuel economy is improved by 2 mpg both city and highway due to smooth 7 speed transmission. Had seen pictures of the vehicle and wasnt sure about styling but in person it is awesome. More luxury, more features, more distinct exterior looks and move luxurious interior. Awesome with no price change on base model

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  Amazing Car - 2004 Infiniti QX56
  By ccantrell - March 14 - 10:00 am

  Wow, we just bought ours and I have to say, this is an amazing SUV! Infinity did their homework and is going to kill the others in its class. We looked at them all and the QX56 was leaps and bounds above the rest; features, comfort, styling and standard features. If you are looking at a new SUV, go drive one for yourself and you will be sold. Be prepared to spend MSRP. They seem to be in high demand and only a limited number are going to be built each year and of that, only a few are going to be 4WD from what I have been told.

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  Excellent SUV QX56 4X4 - 2005 Infiniti QX56
  By Happy Owner - March 12 - 11:00 pm

  With 3000 miles already,my wife and I are very pleased with the vehicle. There hasnt been one trip back to the dealer for anything. The XM Satelite radio is fine, the Navigation is wonderful with the "Birds Eye View". The gas mileage I think could be better but 14.25 mpg is what it gets. This SUV is Powerful, no problem getting out into the thick of it. The stopping power could put you through the windshield, I had one occasion for a panic stop, (AWSOME)

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  QX56 - 2004 Infiniti QX56
  By mmazzie - March 10 - 2:33 pm

  Best car Ive ever owned.

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  My dream suv - 2004 Infiniti QX56
  By drlalena - January 24 - 10:00 am

  Ive just purchased my new QX56 in May of 2004 and I think it is the best vehicle Ive ever owned. Its luxurious, its the most comfortable SUV on the market with way too much room. I never worry about my safety with 6 airbags including side airbags. I feel the most safe Ive ever felt putting my son in his car seat in the back seat of my infiniti. Thanks infiniti for the rear camera. Your a neck saver. Im a Chiropractor and I wish all my customers had this wonderful feature so they wouldnt have to turn around everytime they wanted to see what was behind them. This car is the very top of the line-Thanks Infiniti..your a genius. Dr. Lalena

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  QX56 - 2004 Infiniti QX56
  By moonpsu - January 24 - 10:00 am

  Roomy, powerful SUV with advanced technology. Very comfortable seating with easy access to rear seats and easy conversion to 3rd row of seats. Attractive design both interior and exterior. Smooth riding even on dirt roads.

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  reliability - 2004 Infiniti QX56
  By kareem rasheed - December 27 - 8:30 pm

  This car has lot of flaws and it is painful to pay so much money and do not get reliability. It has been in shop many times for AC, brakes, heater, door locks. The engine makes grinding noise in spite of using super unleaded fuel.

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  Great car but some disappointments - 2004 Infiniti QX56
  By H.H. - December 13 - 10:00 am

  Very practical, safe car for families. Smooth, luxurious, powerful, comfortable. A few quirks needed repairs: sunroof rollers had been painted, resulting in squealing noise; DVD screen rattles a bit; cruise control didnt work. Stereo system a let-down. VERY happy with sales experience at Miller Van Nuys--bought my QX56 early in the game and did TONS of research and wouldnt be taken advantage of with regards to sales price. Miller (David Marsh in fleet sales) presented best deal of all dealerships in CA and other local states and even beat FleetRate.com