For enhanced safety, the front and second-row seat shoulder belts of the Hyundai Santa Fe 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 Mazda CX-9 doesn’t offer pretensioners for its second-row seat belts.
Both the Santa Fe and CX-9 have child safety locks to prevent children from opening the rear doors. The Santa Fe 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 CX-9’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 are reminded to check the back seat. The CX-9 doesn’t offer a back seat reminder.
The Hyundai Santa Fe has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The CX-9 doesn’t offer knee airbags.
When descending a steep, off-road slope, the Santa Fe’s standard Downhill Brake Control allow you to creep down safely. The CX-9 doesn’t offer Downhill Brake Control.
Both the Santa Fe and CX-9 have rear cross-traffic warning, but the Santa Fe has Rear Cross-Traffic Collision-Avoidance Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The CX-9’s Rear Cross Traffic Alert doesn’t automatically brake.
Both the Santa Fe and the CX-9 have standard driver and passenger frontal airbags, front side-impact 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, blind spot warning systems, rearview cameras, rear cross-path warning, available all wheel drive and around view monitors.
The Hyundai Santa Fe achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The CX-9 has not yet been fully evaluated by the IIHS for 2024.