For enhanced safety, the front and rear seat shoulder belts of the Lexus ES 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 Prius doesn’t offer pretensioners for its rear seat belts.
The Lexus ES has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Prius doesn’t offer a front passenger side knee airbag.
The ES 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 Prius 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 ES offers an optional Panoramic View Camera to allow the driver to see objects all around the vehicle on a screen. The Prius only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The ES has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. Only the Prius LE/XLE/Limited offers a blind spot warning system.
To help make backing out of a parking space safer, the ES has standard Rear Cross-Traffic Alert to warn the driver of approaching traffic and automatically engage the brakes to help avoid a collision. Only the Prius LE/XLE/Limited offers Rear Cross Traffic Alert.
Both the ES and the Prius have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras and driver alert monitors.
The Lexus ES weighs 470 to 770 pounds more than the Toyota Prius. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Lexus ES is safer than the Toyota Prius:
|
ES |
Prius |
|
Driver |
|
STARS |
5 Stars |
4 Stars |
HIC |
120 |
229 |
Neck Injury Risk |
24% |
33% |
Neck Stress |
239 lbs. |
323 lbs. |
Neck Compression |
30 lbs. |
51 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 Lexus ES is safer than the Toyota Prius:
|
ES |
Prius |
|
Front Seat |
|
STARS |
5 Stars |
5 Stars |
HIC |
85 |
168 |
Chest Movement |
.6 inches |
.8 inches |
Hip Force |
264 lbs. |
373 lbs. |
|
Rear Seat |
|
STARS |
5 Stars |
5 Stars |
Spine Acceleration |
43 G’s |
45 G’s |
|
Into Pole |
|
STARS |
5 Stars |
5 Stars |
Spine Acceleration |
36 G’s |
39 G’s |
Hip Force |
570 lbs. |
781 lbs. |
New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.
For its performance in IIHS driver-side and passenger-side small overlap frontal, moderate overlap frontal, updated side impact, headlight, and daytime pedestrian crash prevention testing, the Insurance Institute for Highway Safety grants the ES the rating of “Top Safety Pick” for 2023, a rating granted to only 54 vehicles tested by the IIHS. The Prius last would have qualified as a “Top Safety Pick” in 2018.