2011 Infiniti QX56 Road Test 2 Specs | Edmunds

2011 INFINITI QX56 - Road Test Specs

2011 Infiniti QX56 SUV

(5.6L V8 4x4 7-speed Automatic)


Year Make Model2011 Infiniti QX56 4dr SUV 4WD (5.6L 8cyl 7A)
Vehicle Type4WD 4dr 8-passenger SUV
Base MSRP$60,750
Options on test vehicleDeluxe Touring Package ($5,800 -- 22-by-8-inch 9-spoke forged aluminum alloy wheels with P275/50R22 H-rated all-season performance tires, Hydraulic Body Motion Control system, climate-controlled front seats and heated second-row seats, remote tip-up second-row seats for easy third-row entry and exit, semi-aniline leather seating, Mocha Burl trim, second-row footwell lighting, Advanced Climate Control System [ACCS] with auto recirculation, Plasmacluster air purifier and Grape Polyphenol Filter, headlight washers); Technology Package ($2,850 -- Intelligent Cruise Control, Lane Departure Warning [LDW] and Lane Departure Prevention [LDP] systems, Distance Control Assist [DCA], Intelligent Brake Assist [IBA] with Forward Collision Warning [FCW], Blind Spot Warning, front pre-crash seatbelts, auto-leveling headlights with adaptive front lighting system [AFS]); Theater Package ($2,450 -- Dual 7-inch color monitors DVD system, two wireless headphones, wireless remote control, auxiliary audio/video input jacks and 120V power outlet located at the rear part of first-row center console); Illuminated Kick Plates ($390 -- Front doorsills with soft glowing "Infiniti" logo along their bottom); Roof Rail Crossbars ($320).
As-tested MSRP$72,560
Assembly locationJapan


ConfigurationLongitudinal, front-engine, four-wheel drive
Engine typeNaturally aspirated, direct-injected, V8, gasoline
Displacement (cc/cu-in)5,552cc (339cu-in)
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves/cylinder, variable exhaust-valve timing, variable intake-valve timing and lift
Compression ratio (x:1)10.8
Redline, indicated (rpm)6,000
Horsepower (hp @ rpm)400 @ 5,800
Torque (lb-ft @ rpm)413 @ 4,000
Fuel typePremium unleaded (recommended)
Transmission type7-speed automatic, console shifter with manual mode, tow-haul mode, snow mode
Transmission ratios (x:1)I = 4.89; II = 3.17; III = 2.03; IV = 1.41; V = 1.00; VI = 0.86; VII = 0.78
Final-drive ratio (x:1)2.94
Transfer-case ratio (x:1)2.70


Suspension, frontIndependent double-wishbone with high-mount upper arm, coil springs, hydraulic body motion control
Suspension, rearIndependent double-wishbone, coil springs, auto-leveling air springs, hydraulic body motion control
Steering typeHydraulic-assist, speed-proportional, rack-and-pinion power steering
Steering ratio (x:1)19.7
Tire make and modelBridgestone Dueler H/T 684 II
Tire typeAll-season
Tire size, frontP275/50R22 111H
Tire size, rearP275/50R22 111H
Tire sizeP275/50R22 111H
Wheel size, front22-by-8
Wheel size, rear22-by-8
Wheel size22-by-8
Wheel materialCast-aluminum alloy
Brakes, front13.8-in ventilated cast-iron discs with 2-piston sliding calipers
Brakes, rear13.8-in ventilated cast-iron discs with single-piston sliding calipers

Track Test Results

Acceleration, 0-30 mph (sec.)2.6
0-45 mph (sec.)4.5
0-60 mph (sec.)6.8
0-75 mph (sec.)10.2
1/4-mile (sec. @ mph)15.1 @ 92.8
0-60 with 1 foot of rollout (sec.)6.5
0-30 mph, trac ON (sec.)2.8
0-45 mph, trac ON (sec.)4.6
0-60 mph, trac ON (sec.)7.0
0-75 mph, trac ON (sec.)10.4
1/4-mile, trac ON (sec. @ mph)15.1 @ 92.6
0-60, trac ON with 1 foot of rollout (sec.)6.5
Braking, 30-0 mph (ft.)31
60-0 mph (ft.)123
Slalom, 6 x 100 ft. (mph)56.3
Slalom, 6 x 100 ft. (mph) ESC ON55.9
Skid pad, 200-ft. diameter (lateral g)0.70
Skid pad, 200-ft. diameter (lateral g) ESC ON0.69
Sound level @ idle (dB)43.0
@ Full throttle (dB)71.1
@ 70 mph cruise (dB)66.1
Engine speed @ 70 mph (rpm)1,900

Test Driver Ratings & Comments

Acceleration commentsAbsolutely refuses pedal overlap for a snappy launch, but the electronic throttle can be whacked to the floor at the same moment the brake is released for a couple of extra thenths. Once under way, the QX feels fast for its size. There is, however, some sort of surging mid-gear at wide-open throttle. I imagine "it" has to do with the auto 4WD sorting out grip and torque distribution. Upshifts are quite smooth and occur right at redline.
Braking commentsMedium-firm pedal gets firmer at bottom of stroke. Less dive than expected from such a tall/heavy SUV. Also, good fade resistance with the 4th stop shorter than the first.
Handling commentsSkid pad: With ESC "off" (not really) the QX breathes off the throttle to maintain sub-limit speed. With ESC on, it taps individual brakes to net the same electronically-limited result. Steering feel appropriately weighted at this speed. Body roll is present, but not excessive for a vehicle of this heft. Slalom: As with any non-defeat ESC, smoothness is rewarded. In either "on" or so-called "off," the QX goes into self-preservation mode at the slightest sound of tire squeal or quick movements of the steering wheel. Still, for its size and mass, the QX feels confident, stable and responsive.

Testing Conditions

Test date7/13/2010
Test locationAuto Club Speedway
Elevation (ft.)1,121
Temperature (°F)92.1
Relative humidity (%)23.6
Barometric pressure (in. Hg)28.7
Wind (mph, direction)6.7, headwind
Odometer (mi.)4,789
Fuel used for test91-octane gasoline
As-tested tire pressures, f/r (psi)35/35

Fuel Consumption

EPA fuel economy (mpg)14 city/20 highway/16 combined
Edmunds observed (mpg)15.4
Fuel tank capacity (U.S. gal.)26.0
Driving range (mi.)520

Audio and Advanced Technology

Stereo descriptionStandard Bose 13-speaker premium audio
iPod/digital media compatibilityStandard iPod/MP3 player USB jack, streaming Bluetooth audio, auxilliary RCA audio/video inputs
Satellite radioStandard XM
Hard-drive music storage capacity (Gb)Standard 9.3
Rear seat video and entertainmentOptional DVD player with 7-inch dual headrest monitors and RCA inputs
Bluetooth phone connectivityStandard
Navigation systemStandard hard drive with traffic
Smart entry/StartStandard ignition, doors, hatch
Parking aidsStandard parking sonar, perimeter + back-up camera system
Blind-spot detectionOptional
Adaptive cruise controlOptional
Lane-departure monitoringOptional departure warning w/active correction
Collision warning/avoidanceOptional

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)5,850
Curb weight, as tested (lbs.)6,038
Weight distribution, as tested, f/r (%)51.9/48.1
Length (in.)208.3
Width (in.)79.9
Height (in.)75.8
Wheelbase (in.)121.1
Track, front (in.)67.5
Track, rear (in.)67.9
Turning circle (ft.)41.6
Legroom, front (in.)39.6
Legroom, rear (in.)41.0
Legroom, 3rd row (in.)28.8
Headroom, front (in.)39.9
Headroom, rear (in.)40.0
Headroom, 3rd row (in.)36.8
Shoulder room, front (in.)63.8
Shoulder room, rear (in.)63.5
Shoulder room, 3rd row (in.)60.5
Seating capacity7
Step-in height, measured (in.)22.9
Max cargo volume behind 1st row (cu-ft)95.1
behind 3rd row (cu-ft)16.6
Cargo loading height, measured (in.)36.8
GVWR (lbs.)7,500
GCWR (lbs.)14,480
Tow capacity, mfr. claim (lbs.)8,500
Tow capacity, as equipped (lbs.)8,292
Ground clearance (in.)9.2
Approach angle (degrees)20.9
Departure angle (degrees)22.3
Breakover angle (degrees)20.7


Bumper-to-bumper4 years/60,000 miles
Powertrain6 years/70,000 miles
Corrosion7 years/Unlimited miles
Roadside assistance4 years/60,000 miles

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