For enhanced safety, the front and rear seat shoulder belts of the Mazda CX-30 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Fiat 500X doesn’t offer pretensioners for its rear seat belts.
The Mazda CX-30 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 500X doesn’t offer a front passenger side knee airbag.
The Insurance Institute for Highway Safety tests front crash prevention systems. With a score of 6 points, IIHS rates the Smart Brake Support in the CX-30 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 CX-30 Turbo Premium Plus has standard Rear Smart Brake Support that use rear sensors to monitor for objects to the rear and automatically apply the brakes to prevent a collision. The 500X doesn’t offer backup collision prevention brakes.
The CX-30’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 CX-30 Turbo Premium Plus has a standard 360° 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.
Both the CX-30 and 500X offer rear cross-traffic warning, but the CX-30 Turbo Premium Plus has Rear Cross Traffic Braking (automatically applies the brakes) to better prevent a collision when backing near traffic.
Both the CX-30 and the 500X 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, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras and available blind spot warning systems.
For its performance in IIHS driver-side and passenger-side small overlap frontal, moderate overlap frontal, updated side impact, headlight, and daytime pedestrian crash prevention testing, the Insurance Institute for Highway Safety grants the CX-30 the rating of “Top Safety Pick” for 2023, a rating granted to only 53 vehicles tested by the IIHS. The 500X last would have qualified as a “Top Safety Pick” in 2017.