Both the Santa Fe Hybrid and 500X have child safety locks to prevent children from opening the rear doors. The Santa Fe Hybrid has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The 500X’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
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 Santa Fe Hybrid are reminded to check the back seat when a sensor determines the back seat is occupied. The 500X doesn’t offer a back seat reminder.
The Insurance Institute for Highway Safety tests front crash prevention systems. With a score of 6 points, IIHS rates the Forward Collision-Avoidance Assist in the Santa Fe Hybrid as “Superior.” The 500X scores only 4 points and is rated only “Advanced.”
Over 200 people are killed each year when backed over by motor vehicles. The Santa Fe Hybrid Limited has standard Parking Collision Avoidance Assist that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The 500X doesn’t offer backup collision prevention brakes.
When descending a steep, off-road slope, the Santa Fe Hybrid’s standard Downhill Brake Control allows you to creep down safely. The 500X doesn’t offer Downhill Brake Control.
The Santa Fe Hybrid’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 Sport.
The Santa Fe Hybrid offers an optional Surround View Monitor to allow the driver to see objects all around the vehicle on a screen. The 500X 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 Santa Fe Hybrid 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 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 Santa Fe Hybrid has standard Rear Cross-Traffic Collision Warning and Rear Cross-Traffic Collision-Avoidance Assist automatically engages the brakes to help avoid a collision. Fiat charges extra for Rear Cross Path Detection on the 500X, and only on the Sport and the 500X’s Rear Cross Path Detection does not include automatic braking.
Both the Santa Fe Hybrid and the 500X have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights and rearview cameras.
The Hyundai Santa Fe Hybrid weighs 773 to 922 pounds more than the Fiat 500X. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the Santa Fe Hybrid its highest rating: “Top Safety Pick Plus” for 2022, a rating granted to only 126 vehicles tested by the IIHS. The 500X last would have qualified as only a standard “Top Safety Pick” in 2017.