My Honda Civic gets the speed wrong almost 100% of the time in Slovenia where intersections automatically cancel out non-zoned speed limit signs (so no crossed out signs that the car could read). Luckily it doesn’t beep or nag about it.

(Which makes me wonder, is there a flag set to make it not beep on cars sold here? Cuz otherwise people would be returning them en masse)

It's the same in Poland. Toyota found a way that you can install some "immobilizer" thing that hacks the system into muting the alerts (but they still blink though) and was so proud that they started calling owners offering it for install. But all the cars do beep.