In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Niro are reminded to check the back seat if they opened the rear door before starting out. The 500X doesn’t offer a back seat reminder.
Over 200 people are killed each year when backed over by motor vehicles. The Niro EX/SX/Touring has standard Parking Collision-Avoidance Assist that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The 500X doesn’t offer backup collision prevention brakes.
The Niro’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the 500X and is only available on 500X Trekking/Sport/Trekking Plus.
The Niro has a standard blind spot warning system which uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. A system to reveal vehicles in the 500X’s blind spot costs extra.
To help make backing out of a parking space safer, the Niro has a standard rear cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Only the 500X Trekking/Sport/Trekking Plus offers a rear cross-path warning system and it costs extra.
The Niro’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 500X doesn’t offer a driver alert monitor.
Both the Niro and the 500X have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available front and rear parking sensors.

