For enhanced safety, the front and rear seat shoulder belts of the Toyota Mirai 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 Honda Clarity Fuel Cell doesn’t offer pretensioners for the rear seat belts.
The Toyota Mirai 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 Clarity Fuel Cell doesn’t offer a front passenger side knee airbag.
The Mirai has standard Whiplash Injury Lessening Seats (WIL), which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the WIL system moves the headrests forward to prevent neck and spine injuries. The Clarity Fuel Cell doesn’t offer a whiplash protection system.
The Mirai 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 Clarity Fuel Cell 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.
Over 200 people are killed each year when backed over by motor vehicles. The Mirai offers optional Automated Braking that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Clarity Fuel Cell doesn’t offer backup collision prevention brakes.
The Mirai offers an optional Bird’s Eye View Monitor to allow the driver to see objects all around the vehicle on a screen. The Clarity Fuel Cell only offers a rear monitor.
To help make backing out of a parking space safer, the Mirai’s standard rear cross-path warning system uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Clarity Fuel Cell doesn’t offer a cross-path warning system.
The Mirai’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 Clarity Fuel Cell doesn’t offer a driver alert monitor.
Both the Mirai and the Clarity Fuel Cell have standard driver and passenger frontal airbags, front 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 and rearview cameras.