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2009 Mercedes C class

Midsize luxury/near luxury car
  • 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 (standard); rear seat-mounted torso airbags (optional beginning with 2010 models)
2
Driver knee airbag: a separate airbag in the lower instrument panel designed to minimize knee injuries in frontal crashes (beginning with 2010 models)
3
Electronic stability control
4
Antilock brakes
5
Programmable daytime running lights
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2014
M
G
G
G
G
2013
M
G
G
G
G
2012
P
G
G
G
G
2011
P
G
G
G
G
2010
P
G
G
G
G
2009
G
G
G
G
2008
G
G
G
2007
G
A
A
2006
G
A
A
2005
G
A
M
2004
G
M
2003
G
2002
G
2001
G

Applies to 2008-09 models

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

The Mercedes C class was redesigned for the 2008 model year. Two tests of the C class were conducted, one by the Institute and the other by Mercedes as part of frontal crash test verification. The overall rating of Good is based on review of both tests, which independently result in overall ratings of Good. The ratings and vehicle specifications based on the Institute’s test are shown below.

Injury measures

In each test, measures taken from the head, neck, chest, and one leg indicate low risk of injuries to these body regions in a crash of this severity. Forces measured on the left knee in the Institute’s test indicate that injuries to the knee would be possible, but right leg/foot forces were low. (In the test conducted by Mercedes, left leg/foot forces were low, but forces on the right tibia indicate the possibility of lower leg injuries.) Head acceleration in each test from the roof rail hit was low.

Restraints and dummy kinematics

Dummy movement was well controlled in both tests. During rebound, the dummy's head hit the roof rail, and in the Institute's test, also the sunvisor and grab handle.

Tested vehicle specifications

Tested vehicle2008 Mercedes C 300 4-door
Weight 3,505 lbs.
Side airbagsfront and rear head curtain airbags and front seat-mounted torso airbags
Wheelbase109 in.
Length182 in.
Width70 in.
Engine3.0 L V6
EPA ratings18 mpg city / 25 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDVTF0716CEF0804
Footwell intrusion
Footrest (cm)01
Left (cm)12
Center (cm)12
Right (cm)12
Brake pedal (cm)12
Instrument panel rearward movement
Left (cm)00
Right (cm)00
Steering column movement
Upward (cm)-3-3
Rearward (cm)48
A-pillar rearward movement (cm)00

Driver injury measures

Test IDVTF0716CEF0804
Head
HIC-15208166
Peak gs at hard contact47 32
Neck
Tension (kN)1.1 0.9
Extension bending moment (Nm)-15 6
Maximum Nij 0.38 0.27
Chest maximum compression (mm)33 30
Legs
Femur force - left (kN)3.8 3.3
Femur force - right (kN)3.3 1.7
Knee displacement - left (mm)6 14
Knee displacement - right (mm)11 10
Maximum tibia index - left0.35 0.62
Maximum tibia index - right0.81 0.70
Tibia axial force - left (kN)2.22.1
Tibia axial force - right (kN)3.62.5
Foot acceleration (g)
Left7377
Right8647

Applies to 2009-14 models

Overall evaluation
G
Structure and safety cage
G
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 Mercedes C class was redesigned for the 2008 model year. Beginning with 2009 models, the front-seat mounted side torso airbags were modified to include an additional chamber to protect the pelvis in side-impact crashes.

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 and a side airbag that deployed from the seat.

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 vehicle2009 Mercedes C 300 4-door
Weight 3,510 lbs.
Side airbagsstandard front and rear head curtain airbags and standard front seat-mounted torso/pelvis airbags
Wheelbase109 in.
Length182 in.
Width70 in.
Engine3.0 L V6
EPA ratings18 mpg city / 25 mpg highway

How this test is conducted

Measures of occupant compartment intrusion on driver side

Test IDCES0842
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.
-20.5

Driver injury measures

Test IDCES0842
Head HIC-15165
Neck
Tension (kN)0.8
Compression (kN)0.4
Shoulder
Lateral deflection (mm)44
Lateral force (kN)1.6
Torso
Maximum deflection (mm)35
Average deflection (mm)30
Maximum deflection rate (m/s)2.97
Maximum viscous criterion (m/s)0.45
Pelvis
Iliac force (kN)2.0
Acetabulum force (kN)2.2
Combined force (kN)3.8
Left femur
L-M force (kN)0.1
L-M moment (Nm)74
A-P moment (Nm) 40

Passenger injury measures

Test IDCES0842
Head HIC-15155
Neck
Tension (kN)0.5
Compression (kN)0.5
Shoulder
Lateral deflection (mm)15
Lateral force (kN)0.9
Torso
Maximum deflection (mm)17
Average deflection (mm)13
Maximum deflection rate (m/s)2.17
Maximum viscous criterion (m/s)0.19
Pelvis
Iliac force (kN)1.6
Acetabulum force (kN)1.0
Combined force (kN)2.6
Left femur
L-M force (kN)0.6
L-M moment (Nm)89
A-P moment (Nm) -48

Applies to 2008-14 models

Overall evaluation
G
Curb weight3,510 lbs
Peak force18,826 lbs
Strength-to-weight ratio5.36
Tested vehicle
2010 Mercedes-Benz C 300 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 2008-14 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 (AHR)

How this test is conducted

Seat typePower leather seats (AHR)
Geometry
Backset (mm)40
Distance below top of head (mm)36
Seat design parameters
Pass/failPass
Max T1 acceleration (g)11.7
Head contact time (ms)52
Force ratingLow
Neck forces
Max neck shear force (N)34
Max neck tension (N)453

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