Top Safety Pick

2011 Infiniti M37/M56

large luxury car / 4-door sedan

Award applies only to vehicles Except M56x 4-wheel drive

2011 Infiniti M37/M56 4-door sedan

Crashworthiness

Rating overview
Moderate overlap front
Side
Roof strength
Head restraints & seats

Key

  • G
    Good
  • A
    Acceptable
  • M
    Marginal
  • P
    Poor
  • Superior
  • Advanced
  • Basic

Some ratings use a scale of Poor to Good. Others range from Basic to Superior.

Moderate overlap front

Rating applies to 2011-12 models

Tested vehicle: 2011 Infiniti M37x 4-door 4wd

The Infiniti M sedan was redesigned for the 2011 model year and renamed the M37 and M56 because the sizes of the two available engines were increased. Frontal ratings are assigned by the Institute based on a test conducted by Nissan as part of frontal crash test verification.

Overall evaluation
Structure and safety cage
Injury measures
Head/neck
Chest
Leg/foot, left
Leg/foot, right
Restraints and dummy kinematics

Side

Rating applies to 2011-12 models

Tested vehicle: 2011 Infiniti M37x Premium 4-door 4wd with standard front and rear head curtain airbags and standard front seat-mounted torso airbags

The Infiniti M sedan was redesigned for the 2011 model year and renamed the M37 and M56 because the sizes of the two available engines were increased. Side ratings are assigned by the Institute based on a test conducted by Nissan as part of side crash test verification.

Overall evaluation
Structure and safety cage
Driver injury measures
Head/neck
Torso
Pelvis/leg
Driver head protection
Rear passenger injury measures
Head/neck
Torso
Pelvis/leg
Rear passenger head protection

Roof strength

Rating applies to 2011-13 models

Tested vehicle: 2011 Infiniti M37 4-door

The SWR for the M56x (all-wheel drive version of the V8-powered Infiniti M56) is 3.81, based on curb weight provided by Nissan of 4,224 lbs for the 2011 model and IIHS peak force of 16,085 lbs on tested 2011 M37 model. This weight is 10% above the weight of the tested 2011 M37, which means this V8 awd model does not qualify for the Good rating.

The M Hybrid's specified curb weights are 4,129 lbs and 4,136 lbs for the 2012 and 2013 models, respectively, These weights are not high enough to exceed the 10% threshold of 4,203 lbs.

Overall evaluation
Curb weight 3,821 lbs
Peak force 16,085 lbs
Strength-to-weight ratio 4.21

Head restraints & seats

Rating applies to 2011-13 models

Seat type: Power leather seat

Overall evaluation
Dynamic rating
Seat/head restraint geometry