2018 Buick LaCrosse

large car / 4-door sedan

2018 Buick LaCrosse 4-door sedan
2017 Buick LaCrosse shown

Crashworthiness

Rating overview
Small overlap front: driver-side
Moderate overlap front: original test
Side: original test
Roof strength
Head restraints & seats

Crash avoidance & mitigation

Headlights
Front crash prevention: vehicle-to-vehicle
Optional system
Superior
Optional system
Basic

Seat belts & child restraints

LATCH ease of use

Other available safety features

  • Optional blind spot detection
  • Optional lane departure warning
  • Optional lane departure prevention

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.

Small overlap front: driver-side

Rating applies to 2017-19 models

Tested vehicle: 2017 Buick LaCrosse Essence 4-door

The Buick LaCrosse was redesigned for the 2017 model year.

Overall evaluation
Structure and safety cage
Driver injury measures
Head/neck
Chest
Hip/thigh
Lower leg/foot
Driver restraints and dummy kinematics

Action shot taken during the small overlap frontal crash test.

The dummy's position in relation to the door frame, steering wheel, and instrument panel after the crash test indicates that the driver's survival space was maintained very well.

The dummy's head contacted the frontal airbag but slid partway off the left side, allowing the head to move toward the gap in coverage between the frontal and side curtain airbags.

The driver's space was maintained well, and risk of injuries to the dummy's legs and feet was low.

Technical measurements for this test

Measures of occupant compartment intrusion on driver side

Test ID CEN1702
Lower occupant compartment
Lower hinge pillar max (cm) 8
Footrest (cm) 9
Left toepan (cm) 2
Brake pedal (cm) 1
Parking brake (cm)
Rocker panel lateral average (cm) 2
Upper occupant compartment
Steering column 3
Upper hinge pillar max (cm) 4
Upper dash (cm) 4
Lower instrument panel (cm) 4

Driver injury measures

Test ID CEN1702
Head
HIC-15 61
Peak gs at hard contact no contact
Neck
Tension (kN) 0.9
Extension bending moment (Nm) 18
Maximum Nij 0.20
Chest maximum compression (mm) 16
Femur (kN)
Left 0.5
Right 0.3
Knee displacement (mm)
Left 0
Right 1
Knee-thigh-hip injury risk (%)
Left 0
Right 0
Maximum tibia index
Left 0.58
Right 0.33
Tibia axial force (kN)
Left 2.1
Right 0.9
Foot acceleration (g)
Left 47
Right 39

About the small overlap front test

Moderate overlap front: original test

Rating applies to 2017-19 models

Tested vehicle: 2017 Buick LaCrosse Essence 4-door

The Buick LaCrosse was redesigned for the 2017 model year. Moderate overlap frontal ratings are assigned by the Institute based on a test conducted by General Motors.

Overall evaluation
Structure and safety cage
Driver injury measures
Head/neck
Chest
Leg/foot, left
Leg/foot, right
Driver restraints and dummy kinematics
Technical measurements for this test

Measures of occupant compartment intrusion on driver side

Test ID VTF1619
Footwell intrusion
Footrest (cm) 5
Left (cm) 7
Center (cm) 3
Right (cm) 5
Brake pedal (cm) 9
Instrument panel rearward movement
Left (cm) 0
Right (cm) 0
Steering column movement
Upward (cm) -2
Rearward (cm) -5
A-pillar rearward movement (cm) 1

Driver injury measures

Test ID VTF1619
Head
HIC-15 161
Peak gs at hard contact no contact
Neck
Tension (kN) 1.0
Extension bending moment (Nm) 6
Maximum Nij 0.22
Chest maximum compression (mm) 25
Legs
Femur force - left (kN) 0.4
Femur force - right (kN) 0.9
Knee displacement - left (mm) 1
Knee displacement - right (mm) 1
Maximum tibia index - left 0.29
Maximum tibia index - right 0.38
Tibia axial force - left (kN) 1.9
Tibia axial force - right (kN) 2.3
Foot acceleration (g)
Left 46
Right 57

About the original moderate overlap front test

Side: original test

Rating applies to 2017-19 models

Tested vehicle: 2017 Buick LaCrosse Preferred 4-door

The Buick LaCrosse was redesigned for the 2017 model year. Side ratings are assigned by the Institute based on a test conducted by General Motors.

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
Technical measurements for this test

Measures of occupant compartment intrusion on driver side

Test ID VTS1618
B-pillar to longitudinal centerline of driver's seat (cm) -12.0
Negative numbers indicate the amount by which the crush stopped short of the seat centerline.

Driver injury measures

Test ID VTS1618
Head HIC-15 392
Neck
Tension (kN) 1.3
Compression (kN) 0.1
Shoulder
Lateral deflection (mm) 34
Lateral force (kN) 1.5
Torso
Maximum deflection (mm) 39
Average deflection (mm) 35
Maximum deflection rate (m/s) 4.89
Maximum viscous criterion (m/s) 0.78
Pelvis
Iliac force (kN) 2.0
Acetabulum force (kN) 0.9
Combined force (kN) 2.4
Left femur
L-M force (kN) 0.7
L-M moment (Nm) 17
A-P moment (Nm) 128

Passenger injury measures

Test ID VTS1618
Head HIC-15 124
Neck
Tension (kN) 0.1
Compression (kN) 0.5
Shoulder
Lateral deflection (mm) 15
Lateral force (kN) 0.5
Torso
Maximum deflection (mm) 14
Average deflection (mm) 13
Maximum deflection rate (m/s) 2.13
Maximum viscous criterion (m/s) 0.14
Pelvis
Iliac force (kN) 0.2
Acetabulum force (kN) 2.0
Combined force (kN) 2.2
Left femur
L-M force (kN) 0.5
L-M moment (Nm) 40
A-P moment (Nm) 91

About the original side crash test

Roof strength

Rating applies to 2017-19 models

Tested vehicle: 2017 Buick LaCrosse Preferred 4-door

Overall evaluation
Curb weight3,640 lbs
Peak force19,927 lbs
Strength-to-weight ratio5.47

About the roof strength test

Head restraints & seats

Seat type: Power leather seat

Overall evaluation
Dynamic rating
Seat/head restraint geometry
Technical measurements for this test
Seat type Power leather seat
Geometry
Backset (mm) 30
Distance below top of head (mm) 28
Seat design parameters
Pass/fail Pass
Max T1 acceleration (g) 11.6
Head contact time (ms) 60
Force rating 1
Neck forces
Max neck shear force (N) 63
Max neck tension (N) 479

About the head restraint & seat test
Currently, IIHS tests apply only to front seats.

Headlights

Trim level(s)

  • Essence trim
  • Premium trim
  • Avenir trim
Low-beam headlight typeHID projector
High-beam headlight typeHID projector
Curve-adaptive?Yes
High-beam assist?No
Overall rating
Distance at which headlights provide at least 5 lux illumination:
car-simpler car-simpler car-simpler car-simpler car-simpler 0 ft 100 ft 200 ft 300 ft 400 ft 500 ft 600 ft Low beams Optimal low-beam illumination High beams Optimal high-beam illumination

Low beams
On the straightaway, visibility was inadequate on both sides of the road. On curves, visibility was good on the sharp right curve, fair on the gradual right curve and inadequate on both left curves.

The low beams never exceeded glare limits.

High beams
On the straightaway, visibility was fair on the right side of the road and inadequate on the left side. On curves, visibility was fair in all 4 tests.

Technical measurements for this test
Trim level(s)
  • Essence trim
  • Premium trim
  • Avenir trim
Low-beam headlight type HID projector
High-beam headlight type HID projector
Curve-adaptive? Yes
High-beam assist? No
Overall rating
Applies to 2017-19 models
LOW BEAMS Average minimum useful
illumination distance (5 lux)		 Amount glare
exceeded threshold
Straightaway right edge 71.4 m None
Straightaway left edge 39.0 m None
250m radius right curve, right edge 56.6 m None
250m radius left curve, right edge 41.1 m None
150m radius right curve, right edge 60.4 m None
150m radius left curve, right edge 38.4 m None
HIGH BEAMS Average minimum useful
illumination distance (5 lux)
Straightaway right edge 131.9 m
Straightaway left edge 121.1 m
250m radius right curve, right edge 69.2 m
250m radius left curve, left edge 71.6 m
150m radius right curve, right edge 61.8 m
150m radius left curve, left edge 64.1 m

About the headlight evaluation

Front crash prevention: vehicle-to-vehicle

Ratings are given for 2 different trim variations available on this vehicle.

System details

  • Optional Forward Automatic Braking

Package name

  • Optional Driver Confidence Package #2

Overall evaluation

Applies to 2017-19 models

Superior
Superior
with optional equipment
  • This system meets the requirements for forward collision warning.
  • In the 12 mph test, this vehicle avoided a collision.
  • In the 25 mph test, impact speed was reduced by 24 mph.

System details

  • Optional Forward Collision Alert

Package name

  • Optional Premium Trim

Overall evaluation

Applies to 2017-19 models

Basic
Basic
with optional equipment
  • This system meets the requirements for forward collision warning.
  • Autobrake not available.

About the original front crash prevention test

Child seat anchors

Rating applies to 2017-19 models

Overall evaluation
Vehicle trimPremium
Seat type leather

This vehicle has 2 rear seating positions with complete child seat attachment (LATCH) hardware.

It has 1 additional seating position with a tether anchor only.

Overall evaluation
Vehicle trimPremium
Seat type leather
1 2 3
GGood
AAcceptable
MMarginal
PPoor
Seating positions that rely on borrowed lower anchors or have only a tether anchor available are not rated.
thether anchor symbol
Tether anchor
lower anchor symbol
Lower anchors
shared lower achors symbol
Lower anchor(s) can be borrowed from adjacent positions(s)
No hardware available

Details by seating position

1
Tether anchor
easy-to-find location
no other hardware could be confused for anchor
Lower anchors
too deep in seat
too much force needed to attach
easy to maneuver around anchors
2
Tether anchor
easy-to-find location
no other hardware could be confused for anchor
Lower anchors
none available
3
Tether anchor
easy-to-find location
no other hardware could be confused for anchor
Lower anchors
too deep in seat
too much force needed to attach
easy to maneuver around anchors
Technical measurements for this test

Seat position 21

3

Lower anchor A
Open access rated No
Depth (cm) 4-6
Force (lbs) 21
Clearance angle (degrees) 80
Lower anchor B
Open access rated No
Depth (cm) 4-6
Force (lbs) could not measure
Clearance angle (degrees) 76
Tether anchor
Location Rear deck
Confusing hardware present No
Has contrasting label
within 3 inches of tether anchor		 No
Tether anchors can be accessed
while seatback is properly positioned
for use of LATCH		 Not measured

Seat position 22

2

Lower anchor A
No lower latch for this seat position
Lower anchor B
No lower latch for this seat position
Tether anchor
Location Rear deck
Confusing hardware present No
Has contrasting label
within 3 inches of tether anchor		 No
Tether anchors can be accessed
while seatback is properly positioned
for use of LATCH		 Not measured

Seat position 23

1

Lower anchor A
Open access rated No
Depth (cm) 4-6
Force (lbs) could not measure
Clearance angle (degrees) 70
Lower anchor B
Open access rated No
Depth (cm) 4-6
Force (lbs) could not measure
Clearance angle (degrees) 78
Tether anchor
Location Rear deck
Confusing hardware present No
Has contrasting label
within 3 inches of tether anchor		 No
Tether anchors can be accessed
while seatback is properly positioned
for use of LATCH		 Not measured

About the child seat anchor evaluation