I'm having a similar issue with Volvo. It occasionally sees a gate track on the ground as a 'hazard' and will hard-brake when slowly backing over it. It's inconsistent but happens regularly.
Your car also has a safety feature that the others upstream lack: a curb weight of only 2400 lbs. Which is already an order of magnitude more mass than necessary to move a few human beings around.
Also, by having some skin in the game, my guess is you're a lot more likely to drive it responsibly, which is probably the most effective safety feature of all.
Back in the early 1980's, a high school friend from a semi-wealthy family received a money from his parents to buy his first car to drive to school. They were expecting him to buy a new Honda or Toyota, but he proudly showed up at home with an old used 2002. They were not happy, but we had a great time with that car. :-)