Home » Ratings » Infiniti QX50

2014 Infiniti QX50

Midsize luxury SUV

Crashworthiness
Front crash
prevention
Crash avoidance rating
Advanced
with optional
equipment
  • Moderate overlap front
    G
  • Side
    G
  • Roof strength
    G
  • Head restraints & seats
    G
1
Side airbags: front and rear head curtain airbags and front seat-mounted torso airbags
2
Electronic stability control
3
Antilock brakes
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2014
G
G
G
G

Applies to 2014 models

Overall evaluation
G
Structure and safety cage
G
Injury measures
Head/neck
G
Chest
G
Leg/foot, left
G
Leg/foot, right
G
Restraints and dummy kinematics
G
Important: Frontal crash test ratings should be compared only among vehicles of similar weight.

The 2014 Infiniti QX50 is a twin of the tested vehicle.

The Infiniti EX35 was introduced in the 2008 model year and renamed the EX37 in the 2013 model year because the engine size was increased. The EX was renamed the QX50 beginning with the 2014 model year.

Injury measures

Measures taken from the dummy indicate a low risk of any significant injuries in a crash of this severity. Head acceleration from the roof/sunvisor hit was low.

Restraints and dummy kinematics

Dummy movement was well controlled. During rebound, the dummy's head contacted the side curtain airbag, which had deployed during the crash, and the roof and sunvisor.

Tested vehicle specifications

Tested vehicle2008 Infiniti EX35 Journey 4wd
Weight 3,953 lbs.
Side airbagsfront and rear head curtain airbags and front seat-mounted torso airbags
Wheelbase110 in.
Length182 in.
Width71 in.
Engine3.5 L V6
EPA ratings16 mpg city / 23 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDCEF0726
Footwell intrusion
Footrest (cm)6
Left (cm)7
Center (cm)8
Right (cm)7
Brake pedal (cm)10
Instrument panel rearward movement
Left (cm)1
Right (cm)1
Steering column movement
Upward (cm)5
Rearward (cm)-3
A-pillar rearward movement (cm)0

Driver injury measures

Test IDCEF0726
Head
HIC-15237
Peak gs at hard contact38
Neck
Tension (kN)1.1
Extension bending moment (Nm)21
Maximum Nij 0.26
Chest maximum compression (mm)33
Legs
Femur force - left (kN)1.7
Femur force - right (kN)1.5
Knee displacement - left (mm)3
Knee displacement - right (mm)10
Maximum tibia index - left0.46
Maximum tibia index - right0.73
Tibia axial force - left (kN)1.8
Tibia axial force - right (kN)2.1
Foot acceleration (g)
Left112
Right59

Applies to 2014 models

Overall evaluation
G
Structure and safety cage
A
Driver injury measures
Head/neck
G
Torso
G
Pelvis/leg
G
Head protection
G
Rear passenger injury measures
Head/neck
G
Torso
G
Pelvis/leg
G
Head protection
G
Side crash test ratings can be compared across vehicle categories.

The Infiniti EX was introduced in the 2008 model year and renamed the QX50 in the 2014 model year. Beginning with 2014 models, the QX50 received side curtain airbag modifications [FMVSS 226 confirmed by Wayne on 4/25 -- structure is WORSE].

Three tests of the vehicle were conducted, two of 2008 EX models by the Institute and the third representing a 2014 QX50 model by Nissan as part of side crash test verification. These vehicles are rated separately, except that the structure ratings for both vehicles are based on all three tests. (The vehicle tested by Nissan was designated as a 2011 EX model but included the side curtain airbag changes of the 2014 QX50 models.)

Injury measures

Driver — Measures taken from the dummy indicate a low risk of any significant injuries in a crash of this severity.

Passenger — Measures taken from the dummy indicate a low risk of any significant injuries in a crash of this severity.

Head protection

Driver — The dummy’s head was protected from being hit by any hard structures, including the intruding barrier, by a side curtain airbag that deployed from the roof.

Passenger — The dummy’s head was protected from being hit by any hard structures, including the intruding barrier, by a side curtain airbag that deployed from the roof.

Tested vehicle specifications

Tested vehicle2011 Infiniti EX35 Leather 4-door 4wd
Weight 4,017 lbs.
Side airbagsstandard front and rear head curtain airbags and standard front seat-mounted torso airbags
Wheelbase110 in.
Length182 in.
Width71 in.
Engine3.5 L V6
EPA ratings17 mpg city / 24 mpg highway

How this test is conducted

Measures of occupant compartment intrusion on driver side

Test IDCES0746CES0748VTS1123
B-pillar to longitudinal centerline of driver's seat (cm)
Negative numbers indicate the amount by which the crush stopped short of the seat centerline.
-14.5-15.0-15.0

Driver injury measures

Test IDVTS1123
Head HIC-15167
Neck
Tension (kN)0.8
Compression (kN)0.2
Shoulder
Lateral deflection (mm)35
Lateral force (kN)1.5
Torso
Maximum deflection (mm)27
Average deflection (mm)25
Maximum deflection rate (m/s)2.49
Maximum viscous criterion (m/s)0.23
Pelvis
Iliac force (kN)1.4
Acetabulum force (kN)1.2
Combined force (kN)2.5
Left femur
L-M force (kN)0.2
L-M moment (Nm)67
A-P moment (Nm) -113

Passenger injury measures

Test IDVTS1123
Head HIC-1576
Neck
Tension (kN)0.1
Compression (kN)0.6
Shoulder
Lateral deflection (mm)31
Lateral force (kN)1.5
Torso
Maximum deflection (mm)23
Average deflection (mm)15
Maximum deflection rate (m/s)2.12
Maximum viscous criterion (m/s)0.20
Pelvis
Iliac force (kN)0.2
Acetabulum force (kN)1.0
Combined force (kN)1.0
Left femur
L-M force (kN)0.9
L-M moment (Nm)40
A-P moment (Nm) -133

Applies to 2014 models

Overall evaluation
G
Curb weight3,970 lbs
Peak force15,878 lbs
Strength-to-weight ratio4.00
Tested vehicle
2011 Infiniti EX35 Journey 4-door 4wd
Roof strength test ratings can be compared across vehicle categories.

In the test, the strength of the roof is determined by pushing a metal plate against one side of it at a slow but constant speed. The force applied relative to the vehicle's weight is known as the strength-to-weight ratio. This graph shows how the ratio varied as the test of this vehicle progressed. The peak strength-to-weight ratio recorded at any time before the roof is crushed 5 inches is the key measurement of roof strength.

A good rating requires a strength-to-weight ratio of at least 4. In other words, the roof must withstand a force of at least 4 times the vehicle's weight before the plate crushes the roof by 5 inches. For an acceptable rating, the minimum required strength-to-weight ratio is 3.25. For a marginal rating, it is 2.5. Anything lower than that is poor.

How this test is conducted

Applies to 2014 models

Overall evaluation
G
Dynamic rating
G
Seat/head restraint geometry
G
Important: Ratings for head restraints & seats should be compared only among vehicles of similar weight.

Seat type

Power leather seats with manual adjustable lumbar (AHR)

How this test is conducted

Seat typePower leather seats with manual adjustable lumbar (AHR)
Geometry
Backset (mm)26
Distance below top of head (mm)38
Seat design parameters
Pass/failPass
Max T1 acceleration (g)11.6
Head contact time (ms)62
Force ratingLow
Neck forces
Max neck shear force (N)58
Max neck tension (N)494

Applies to 2014-15 models

System details

  • Optional Intelligent Brake Assist
  • Optional Forward Collision Warning

Package name

  • Optional Technology Package

Overall evaluation

Crash avoidance rating
Advanced
with optional
equipment
2 points total

Forward collision warning

This system meets the National Highway Traffic Safety Administration's criteria for forward collision warning.
1 point

Low-speed autobrake

In the 12 mph IIHS test, impact speed was reduced by 1 mph.
0 points

High-speed autobrake

In the 25 mph IIHS test, impact speed was reduced by 5 mph.
1 point

Tested vehicle

2014 Infiniti QX50 Journey 4-door 4wd

How this rating is determined

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