The Sienna has a standard Secondary Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Pacifica doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
Both the Sienna and Pacifica have rear cross-traffic warning, but the Sienna has Rear Cross Traffic Braking (automatically applies the brakes) to better prevent a collision when backing near traffic. The Pacifica’s Rear Cross Path Detection doesn’t automatically brake.
The Sienna’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Pacifica doesn’t offer a driver alert monitor.
Both the Sienna and the Pacifica have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, 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, blind spot warning systems, rearview cameras, rear cross-path warning, available all wheel drive and around view monitors.
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 Sienna is safer than the Chrysler Pacifica:
|
Sienna |
Pacifica |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
42 |
72 |
Chest Movement |
.5 inches |
1 inches |
Abdominal Force |
123 lbs. |
149 lbs. |
Hip Force |
348 lbs. |
395 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
52 |
66 |
Spine Acceleration |
30 G’s |
54 G’s |
Hip Force |
542 lbs. |
764 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
12 inches |
13 inches |
Spine Acceleration |
31 G’s |
50 G’s |
Hip Force |
499 lbs. |
616 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Toyota Sienna is safer than the Pacifica:
|
Sienna |
Pacifica |
Overall Evaluation |
GOOD |
ACCEPTABLE |
Structure |
GOOD |
GOOD |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Neck Tension |
201 lbs. |
335 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
.55 in |
.94 in |
Shoulder Force |
178 lbs. |
223 lbs. |
Torso Max Deflection |
.83 in |
1.26 in |
Pelvis |
GOOD |
GOOD |
Pelvis Force |
736 lbs. |
848 lbs. |
Head Protection |
GOOD |
GOOD |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Head Injury Criterion |
18 |
83 |
Neck Compression |
22 lbs. |
67 lbs. |
Torso |
GOOD |
ACCEPTABLE |
Shoulder Deflection |
.98 in |
1.1 in |
Shoulder Force |
312 lbs. |
424 lbs. |
Torso Max Deflection |
.71 in |
1.97 in |
Torso Deflection Rate |
7 MPH |
12 MPH |
Pelvis |
GOOD |
POOR |
Pelvis Force |
625 lbs. |
1450 lbs. |
Head Protection |
GOOD |
GOOD |
The Toyota Sienna achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Pacifica last would have qualified as a “Top Safety Pick” in 2023.