For enhanced safety, the front and second-row seat shoulder belts of the Toyota Grand Highlander 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 Odyssey doesn’t offer pretensioners for its second-row seat belts.
The Grand Highlander 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 Odyssey 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 Grand Highlander Limited/Platinum offers an optional Parking Support Brake that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Odyssey doesn’t offer backup collision prevention brakes.
The Grand Highlander offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Odyssey doesn’t offer all-wheel drive.
The Grand Highlander (except XLE) offers an optional Panoramic View Monitor to allow the driver to see objects all around the vehicle on a screen. The Odyssey 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.
Both the Grand Highlander and Odyssey have rear cross-traffic warning, but the Grand Highlander Limited/Platinum has Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The Odyssey’s Cross Traffic Monitor doesn’t automatically brake.
The Grand Highlander’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 Odyssey doesn’t offer a driver alert monitor.
Both the Grand Highlander and the Odyssey have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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 and rear cross-path warning.