NHTSA Complaint #11682340 — 2020 MAZDA CX-5

While traveling on an Interstate highway, my passenger side curtain airbag suddenly deployed without any warning while I was driving. There was no collision or impact, there was no debris on the road, or any significant bumps in the road. There was a very loud explosive sound and then my entire passenger side was covered in blue. The sound was so loud that it left my ears ringing and left me badly shaken up. I lost all visibility out of my passenger side as all of my side windows and mirrors were obscured, and I knew there was traffic in that lane along side of me. It felt very dangerous and I had to rely on my lane change sensors to safely pull to the side to assess any damage. There was no evident sign of any impact to my car. All of the glass was intact, there were no scratches, dents or missing paint. The airbag fully deployed for no apparent reason and I was extremely lucky that I was not injured and that my reaction did not cause an accident when this happened. The car was taken to a Mazda dealership to assess, and they did not find any damage either, but said there was no mechanical error on the part of the car, so it is still unexplained. I had it evaluated by an autobody/collision shop, again no damage was determined, their scan showed a diagnostic code that there was a "circuit short to ground".