Context: It was a wet evening here in portland, or (8:15pm pdt, April 13th) and I was getting new tires the following week, so I didn't care about the longevity of the tires. Also, what I experienced was something I read online before buying the spark. I made a legal U-turn to get to the entrance of fred meyer (a kroger store) and hit the accelerator hard enough (~60% throttle) to spin the tires and the traction control activated. I then saw the semi-hidden entrance and hit the brakes hard make a righthand turn into fred meyer. The brakes engaged (w/ ABS) then disengaged after ~.3 seconds. It felt like the motor was regen'ing slightly but the mechanical brakes were not engaged. I started to pump the brakes. About 4 pumps and ~60 feet later, the brakes engaged. I did not make my turn and no one got hurt. Here's a note I received from a lady on a Chevy Spark ev facebook group: My husband (and automotive electrical engineer) explains how this is piss-poor software programming on GM's part. This all has to do with what the system does when pressing the brake pedal if something like the ABS module or other hardware isn't functioning. What he explains is happening is instead of allowing the normal braking system to continue to modulate and function, it just shuts down. Nissan even had issues with braking going into something known as 'ice mode' and failing. (not widely known outside of the industry) he also compared this to the boeing plane crash software issue there (in that case the software kept thinking there was about to be a stall and would nose dive to avoid it which in itself ultimately causing a crash). Essentially all Spark evs have this same potential but only some seem to be affected (all depends on if a component in the system fails or not--- that's when the trouble starts because whoever did that software coding and testing did a crap job of it).

- Portland, OR, USA