For enhanced safety, the front and second-row seat shoulder belts of the Subaru Ascent have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Toyota 4Runner doesn’t offer pretensioners for its second-row seat belts.
Over 200 people are killed each year when backed over by motor vehicles. The Ascent (except Base) offers optional Reverse Automatic Braking that use rear sensors to monitor for objects to the rear and automatically apply the brakes to prevent a collision. The 4Runner doesn’t offer backup collision prevention brakes.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Ascent. But it costs extra on the 4Runner.
For better protection of the passenger compartment, the Ascent uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The 4Runner uses a body-on-frame design, which has no frame members above the floor of the vehicle.
Both the Ascent and the 4Runner have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, available blind spot warning systems, around view monitors, rear cross-path warning and driver alert monitors.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Subaru Ascent is safer than the Toyota 4Runner:
|
Ascent |
4Runner |
OVERALL STARS |
5 Stars |
4 Stars |
|
Driver |
|
STARS |
5 Stars |
4 Stars |
HIC |
190 |
267 |
Neck Injury Risk |
21% |
47% |
Neck Stress |
229 lbs. |
438 lbs. |
Neck Compression |
8 lbs. |
54 lbs. |
Leg Forces (l/r) |
159/292 lbs. |
488/468 lbs. |
|
Passenger |
|
STARS |
5 Stars |
3 Stars |
HIC |
210 |
367 |
Chest Compression |
.7 inches |
.7 inches |
Neck Injury Risk |
33% |
57% |
Neck Stress |
197 lbs. |
271 lbs. |
Leg Forces (l/r) |
35/30 lbs. |
453/353 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 Subaru Ascent is safer than the 4Runner:
|
Ascent |
4Runner |
Overall Evaluation |
GOOD |
MARGINAL |
Restraints |
GOOD |
GOOD |
Head Neck Evaluation |
GOOD |
GOOD |
Head injury index |
71 |
142 |
Peak Head Forces |
0 G’s |
0 G’s |
Steering Column Movement Rearward |
0 cm |
12 cm |
Chest Evaluation |
GOOD |
GOOD |
Hip & Thigh Evaluation |
GOOD |
GOOD |
Femur Force R/L |
.8/.1 kN |
3.9/2.4 kN |
Hip & Thigh Injury Risk R/L |
0%/0% |
1%/0% |
Lower Leg Evaluation |
GOOD |
ACCEPTABLE |
Tibia index R/L |
.51/.39 |
.95/.85 |
Tibia forces R/L |
1.8/.1 kN |
5/2.9 kN |
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 Subaru Ascent is safer than the Toyota 4Runner:
|
Ascent |
4Runner |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
37 |
41 |
Chest Movement |
.5 inches |
1.1 inches |
Abdominal Force |
73 lbs. |
179 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
81 |
89 |
Spine Acceleration |
27 G’s |
36 G’s |
Hip Force |
346 lbs. |
381 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
4 Stars |
Max Damage Depth |
18 inches |
20 inches |
HIC |
149 |
507 |
Hip Force |
637 lbs. |
895 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the Ascent, with its four-star roll-over rating, is 7.6% less likely to roll over than the 4Runner, which received a three-star rating.
The Subaru Ascent has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2024 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned an “Acceptable” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and a “Good” score in the revised pedestrian crash prevention test. The 4Runner is not even a standard “Top Safety Pick” for 2024.