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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  just like a oversized crossover - 2011 Infiniti QX56
  By rbaz123 - January 26 - 6:28 am

  I have 2,200 miles on this SUV and most of all from what I can see this vehicle is almost perfect in every way compared to others in the same price range. Torque from the 5.6 Liter is simply Awesome !! in combination with its 7 speed transmission .. as some of the negative issues I read before my purchase they are so minor. The loud fan noise is something you might hear on cold starts for only 5 sec and dissipates quickly. ... What wind noise !! this thing is very Lexus quiet and smooth at hwy speeds . I do find the base interior to be actually more comfortable and better looking choice of wood accents than the optional upgrade. Feels much like driving my Infiniti FX45 but larger. Love it!

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  QX 56 - 2006 Infiniti QX56
  By karen - January 21 - 3:53 am

  The only problem I see with my qx56 is the wobbly handling when hitting a bump

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  Sweet SUV - 2004 Infiniti QX56
  By usc_mba - December 31 - 10:00 am

  I have had my QX56 for about 6 weeks and love it. We tested the Escalade and Navigator as well and this beat them both hands down. The Escalade interior seemed really outdated and had really weak braking. The Navigator interior was nice, but it drove much more like a truck. I personally think the QX styling is awesome - very cool...

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  So far Soo Good!! - 2005 Infiniti QX56
  By WeBHappy - December 9 - 5:16 pm

  We loved this vehicle from the first test drive. Rented a 2004 for extended test drive and it was terrible!! Brakes felt like we were driving on cobblestones. Took a chance and bought a 2005. We love it and have not had any problems. No other large SUV handles like this. Beats my Q45!!

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  Best Purchase ever - 2010 Infiniti QX56
  By Jcolon - November 25 - 12:20 am

  Bought this vehicle after owning a Rav4.Wanted a bigger and safer ride for my 2 boys and I found it on this one. The captains chair plus the DVD make the ride for them so comfortable and smooth for myself.To much tech and luxury for the prize compare to other SUVs out there and with the powerful engine all I need next to buy is a boat and Im set. Owned Toyotas for my whole life but this is definitely the best buy I ever made.Maybe in a year or two I will trade it for the new 2011 out there cause I really love these vehicle for the prize I ended up paying.

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  Best SUV Ive Ever Owned - 2004 Infiniti QX56
  By Scott Zimmerman - November 13 - 10:00 am

  I was sold on this SUV simply by its price & overall design & excellent reputation which Infiniti has earned through the years & is right behind Lexus in quality & reliability. The QX56 offers superior power & handling unlike other SUVs in its class.

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  Best Luxury SUV Value- Outstanding - 2010 Infiniti QX56
  By npkr - September 22 - 10:26 pm

  I have only had this vehicle for 3 months and 6000 miles but I am very happy with my purchase. The ride is smooth and quiet, seats are very supportive and comfortable, plenty of room and cargo space, and the kids love it as well. Engine is smooth and powerful. Some body lean is noticed in tight turns but its not a sports sedan. Our gas mileage, ave about 15 mpg, is about what you would expect from a large SUV. Loaded with tech features. Considering the terrific incentives and compared to the other SUVs I test drove and considered prior to making purchase (Cadillac Escalade, MB GL, Lincoln Nav) the QX56 was an easy choice. It is easily the best value luxury SUV available right now.

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  The Most Superior of all SUVs - 2004 Infiniti QX56
  By EriNor1 - August 25 - 10:00 am

  Weve had our QX56 since it hit the market in March and we wouldnt trade it in for the world. We previously owned the Chrysler Pacifica, but after seeing the QX56, there was no comparison. We immediately traded in our 10 month old Pacifica. Infiniti didn miss a beat in making this truck. By far, the QX56 is the most superior SUV around.

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  Luxury AND Excellent Customer Service - 2005 Infiniti QX56
  By Amy - August 23 - 3:20 am

  This is a beautiful and luxurious SUV that fits the needs of a large family without compromising on style or luxury. Infinitis customer service is bar NONE. You will LOVE this car!

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  Fantastic - 2011 Infiniti QX56
  By HighGear - August 20 - 6:36 am

  For the price, build quality, and performance, this vehicle blows away the competition. Interior in simply loaded with amenities, which are well positioned and easy to use. Drivetrain is equally impressive. I disagree with editors review-I think the ride quality is great My biggest complaint is the lack of a removable center console or sliding second row seats for easier entry into the 3rd row. 2nd row seats flip forward, but if you have car seats installed in both captains chairs, the 3rd row cannot be accessed without climbing through the back hatch or over the console. The console is held in place by 4 screws and metal tabs which can be removed, leaving 4 small slits in the carpet.