The Highlander Limited's optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The CX-9 doesn't offer pre-crash pretensioners.
The Highlander has standard Whiplash Injury Lessening Seats, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash Injury Lessening Seats system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The CX-9 doesn't offer a whiplash protection system.
The Highlander Limited offers optional Pre-Collision System, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn't react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The CX-9 doesn't offer collision warning or crash mitigation brakes.
The Highlander Limited's optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The CX-9 doesn't offer a lane departure warning system.
Both the Highlander and the CX-9 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front-wheel drive, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, available blind spot warning systems, rear parking sensors and rear cross-path warning.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Toyota Highlander is safer than the Mazda CX-9:
Highlander |
CX-9 |
|
OVERALL STARS |
4 Stars |
3 Stars |
Driver |
||
STARS |
4 Stars |
3 Stars |
Neck Injury Risk |
47% |
47% |
Leg Forces (l/r) |
409/517 lbs. |
1333/496 lbs. |
Passenger |
||
STARS |
5 Stars |
3 Stars |
Chest Compression |
.4 inches |
.9 inches |
Neck Injury Risk |
32% |
54% |
Neck Compression |
55 lbs. |
116 lbs. |
Leg Forces (l/r) |
387/392 lbs. |
362/627 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
A significantly tougher test than their original offset frontal crash test, the Insurance Institute for Highway Safety does 40 MPH small overlap frontal offset crash tests. In this test, where only 25% of the total width of the vehicle is struck, results indicate that the Toyota Highlander is safer than the CX-9:
Highlander |
CX-9 |
|
Overall Evaluation |
ACCEPTABLE |
POOR |
Restraints |
ACCEPTABLE |
POOR |
Head Neck Evaluation |
GOOD |
ACCEPTABLE |
Head injury index |
99 |
137 |
Peak Head Forces |
0 G's |
96 G's |
Steering Column Movement Rearward |
2 cm |
12 cm |
Chest Evaluation |
GOOD |
GOOD |
Hip & Thigh Evaluation |
GOOD |
GOOD |
Femur Force R/L |
2.6/.9 kN |
4.1/1.5 kN |
Lower Leg Evaluation |
GOOD |
ACCEPTABLE |
The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Toyota Highlander is safer than the Mazda CX-9:
Highlander |
CX-9 |
|
Front Seat |
||
STARS |
5 Stars |
5 Stars |
HIC |
54 |
131 |
Chest Movement |
.6 inches |
.6 inches |
Abdominal Force |
88 G's |
214 G's |
Hip Force |
348 lbs. |
455 lbs. |
Rear Seat |
||
STARS |
5 Stars |
5 Stars |
HIC |
111 |
249 |
Spine Acceleration |
41 G's |
43 G's |
Hip Force |
440 lbs. |
816 lbs. |
Into Pole |
||
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
16 inches |
18 inches |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
The Insurance Institute for Highway Safety ( IIHS) performs roof strength tests. In that test the Highlander earned the top rating of “Good” because its roof supported over four times the Highlander's weight before being crushed five inches. The CX-9 was rated two rankings lower at “Marginal.”
The Insurance Institute for Highway Safety rates the general design of front seat head restraints for their ability to protect front seat occupants from whiplash injuries. The IIHS also performs a dynamic test on those seats with “good” or “acceptable” geometry. In these ratings, the Highlander is safer then the CX-9:
Highlander |
CX-9 |
|
Overall Evaluation |
GOOD |
MARGINAL |
Head Restraint Design |
GOOD |
GOOD |
Distance from Back of Head |
16 mm |
60 mm |
Distance Below Top of Head |
2 mm |
26 mm |
Dynamic Test Rating |
GOOD |
MARGINAL |
Seat Design |
Pass |
Fail |
Torso Acceleration |
12.9 g's |
12.9 g's |
Neck Force Rating |
Low |
Medium |
Max Neck Shearing Force |
0 |
132 |
Max Neck Tension |
335 |
682 |
(Lower numerical results are better in all tests.)
For its top level performance in the IIHS moderate overlap frontal impact, side impact, rear impact, roof-crush crash tests, an “Acceptable” rating in the newer small overlap frontal crash test, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Highlander its highest rating: “Top Pick Plus” for 2015, a rating granted to only 64 vehicles tested by the IIHS. The CX-9 is not even a standard “Top Pick.”

