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2012 Chevrolet Impala

Large family car
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  • Moderate overlap front
    G
  • Side
    G
  • Roof strength
    A
  • Head restraints & seats
    A
2011 Chevrolet Impala shown
2011 Chevrolet Impala shown
1
Side airbags: front and rear head curtain airbags and front seat-mounted torso airbags (beginning with 2009 models)
2
Electronic stability control (standard beginning with 2010 models, optional on 2008-09 models)
3
Antilock brakes (standard beginning with 2009 models, optional on 2006-08 models)
4
Daytime running lights
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2014
G
G
2013
G
G
A
A
2012
G
G
A
A
2011
G
G
A
A
2010
G
G
A
2009
A
G
A
2008
A
G
M
2007
A
G
M
2006
A
G
M
2005
G
P
2004
G
P
2003
G
P
2002
G
P
2001
G
P
2000
G

Applies to 2010-13 models

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

The Chevrolet Impala was redesigned for the 2006 model year. Beginning with 2010 models manufactured after December 2009, structural reinforcements were added to the underbody and the frontal airbags were modified to improve occupant protection in frontal offset crashes (note: information about when a specific vehicle was manufactured is on the certification label typically affixed to the car on or near the driver door).

Injury measures

Measures taken from the head, neck, and chest indicate low risk of injuries to these body regions in a crash of this severity. A high acceleration was recorded on the right foot, indicating that foot injuries would be possible.

Restraints and dummy kinematics

Dummy movement was well controlled. After the dummy moved forward into the airbag, it rebounded into the seat without its head coming close to any stiff structure that could cause injury.

Tested vehicle specifications

Tested vehicle2010 Chevrolet Impala LS 4-door
Weight 3,585 lbs.
Side airbagsfront and rear head curtain airbags and front seat-mounted torso airbags
Wheelbase111 in.
Length200 in.
Width73 in.
Engine3.5 L V6
EPA ratings18 mpg city / 29 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDCEF1005
Footwell intrusion
Footrest (cm)7
Left (cm)8
Center (cm)9
Right (cm)6
Brake pedal (cm)5
Instrument panel rearward movement
Left (cm)1
Right (cm)1
Steering column movement
Upward (cm)3
Rearward (cm)3
A-pillar rearward movement (cm)2

Driver injury measures

Test IDCEF1005
Head
HIC-15299
Peak gs at hard contactno contact
Neck
Tension (kN)1.1
Extension bending moment (Nm)25
Maximum Nij 0.24
Chest maximum compression (mm)30
Legs
Femur force - left (kN)1.6
Femur force - right (kN)4.0
Knee displacement - left (mm)0
Knee displacement - right (mm)0
Maximum tibia index - left0.31
Maximum tibia index - right0.72
Tibia axial force - left (kN)1.3
Tibia axial force - right (kN)3.9
Foot acceleration (g)
Left85
Right179

Applies to 2009-13 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 Chevrolet Impala was redesigned for the 2006 model year. Beginning with 2009 models, side curtain airbags were made standard for retail and fleet buyers (they had been optional for fleet buyers previously), and side airbags to protect the drivers' and front passengers' torsos also became standard (the side torso airbags were not available before).

Two tests of the Impala were conducted, one by the Institute of a 2006 model equipped with side curtain airbags, and the other by General Motors of a 2009 model with both side curtain airbags and side torso airbags. These vehicles are rated separately, except that the structural ratings for both vehicles are based on both tests, as are rear dummy injury and head protection ratings, because no changes were made to the rear occupant compartment. Driver dummy injury and head protection ratings for the 2009 model are assigned by the Institute as part of side crash test verification.

Injury measures

Driver — In the test of the 2009 model, measures taken from the dummy indicate a low risk of any significant injuries in a crash of this severity.

Passenger — Measures from the dummies in the two tests, taken together, indicate a low risk of any significant injuries in a crash of this severity.

Head protection

Driver — In the test of the 2009 model, 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 and a side airbag that deployed from the seat.

Passenger — In tests of both the 2006 and 2009 models, 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 vehicle2009 Chevrolet Impala LT 4-door
Weight 3,575 lbs.
Side airbagsstandard front and rear head curtain airbags and standard front seat-mounted torso airbags
Wheelbase111 in.
Length200 in.
Width73 in.
Engine3.5 L V6
EPA ratings18 mpg city / 29 mpg highway

How this test is conducted

Measures of occupant compartment intrusion on driver side

Test IDCES0618VTS1001
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.
-11.0-8.0

Driver injury measures

Test IDVTS1001
Head HIC-15445
Neck
Tension (kN)1.0
Compression (kN)0.6
Shoulder
Lateral deflection (mm)51
Lateral force (kN)1.8
Torso
Maximum deflection (mm)35
Average deflection (mm)28
Maximum deflection rate (m/s)4.23
Maximum viscous criterion (m/s)0.48
Pelvis
Iliac force (kN)1.2
Acetabulum force (kN)2.7
Combined force (kN)3.6
Left femur
L-M force (kN)0.5
L-M moment (Nm)67
A-P moment (Nm) 19

Passenger injury measures

Test IDCES0618VTS1001
Head HIC-15195246
Neck
Tension (kN)0.30.2
Compression (kN)0.40.5
Shoulder
Lateral deflection (mm)4647
Lateral force (kN)1.52.2
Torso
Maximum deflection (mm)3335
Average deflection (mm)2822
Maximum deflection rate (m/s)3.102.84
Maximum viscous criterion (m/s)0.450.56
Pelvis
Iliac force (kN)1.32.2
Acetabulum force (kN)3.04.2
Combined force (kN)3.45.4
Left femur
L-M force (kN)0.50.4
L-M moment (Nm)13081
A-P moment (Nm) 4357

Applies to 2011-13 models

Overall evaluation
A
Curb weight3,635 lbs
Peak force12,547 lbs
Strength-to-weight ratio3.45
Tested vehicle
2011 Chevrolet Impala LT 4-door
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 2009-13 models

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

Seat type

Manual - power seats

How this test is conducted

Seat typeManual - power seats
Geometry
Backset (mm)42
Distance below top of head (mm)46
Seat design parameters
Pass/failFail
Max T1 acceleration (g)10.0
Head contact time (ms)98
Force ratingLow
Neck forces
Max neck shear force (N)57
Max neck tension (N)477

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