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2010 Mercedes GLK

Midsize luxury SUV
  • Roof strength
    G
  • Head restraints & seats
    G
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2014
G
G
G
G
2013
G
G
G
G
2012
G
G
G
G
2011
G
G
G
G
2010
G
G

Applies to 2010-14 models

Overall evaluation
G
Curb weight4,157 lbs
Peak force26,647 lbs
Strength-to-weight ratio6.41
Tested vehicle
2011 Mercedes-Benz GLK 350 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 2010-14 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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