The Prius 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 Leaf 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.
The Prius has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Leaf doesn’t offer all-wheel drive.
Both the Prius and Leaf have Rear Cross Traffic Alert, but the Prius offers optional Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The Leaf’s Rear Cross Traffic Alert doesn’t automatically brake.
Both the Prius and the Leaf have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and available around view monitors.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Toyota Prius is safer than the Nissan Leaf:
|
Prius |
Leaf |
OVERALL STARS |
5 Stars |
4 Stars |
|
Driver |
|
STARS |
5 Stars |
5 Stars |
HIC |
163 |
216 |
Neck Injury Risk |
23% |
26% |
Neck Stress |
237 lbs. |
250 lbs. |
Leg Forces (l/r) |
131/151 lbs. |
393/348 lbs. |
|
Passenger |
|
STARS |
5 Stars |
4 Stars |
Chest Compression |
.6 inches |
.6 inches |
Neck Injury Risk |
25.3% |
49% |
Neck Stress |
151 lbs. |
233 lbs. |
Neck Compression |
23 lbs. |
86 lbs. |
Leg Forces (l/r) |
249/159 lbs. |
209/461 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
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 Prius is safer than the Nissan Leaf:
|
Prius |
Leaf |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
Abdominal Force |
128 lbs. |
137 lbs. |
Hip Force |
290 lbs. |
377 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
Hip Force |
705 lbs. |
887 lbs. |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Max Damage Depth |
11 inches |
13 inches |
Spine Acceleration |
34 G’s |
38 G’s |
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 Prius is safer than the Leaf:
|
Prius |
Leaf |
Overall Evaluation |
GOOD |
ACCEPTABLE |
Structure |
ACCEPTABLE |
MARGINAL |
|
Driver Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Neck Compression |
45 lbs. |
67 lbs. |
Pelvis |
GOOD |
ACCEPTABLE |
Pelvis Force |
759 lbs. |
1093 lbs. |
Head Protection |
GOOD |
GOOD |
|
Passenger Injury Measures |
|
Head/Neck |
GOOD |
GOOD |
Neck Tension |
45 lbs. |
67 lbs. |
Torso |
GOOD |
GOOD |
Shoulder Deflection |
1.42 in |
1.54 in |
Shoulder Force |
268 lbs. |
335 lbs. |
Torso Max Deflection |
1.06 in |
1.38 in |
Torso Deflection Rate |
5 MPH |
6 MPH |
Pelvis |
GOOD |
ACCEPTABLE |
Pelvis Force |
692 lbs. |
937 lbs. |
Head Protection |
GOOD |
GOOD |
The Toyota Prius 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 Leaf is not even a standard “Top Safety Pick” for 2024.