

Of course it wouldn’t arrive via an official approved update channel, but a backdoor. Easy to implement and hide when you write the software. Even VW put manipulated software in their cars before to fake lower emissions. Regulators didn’t notice for a decade. That’s even though it was being actively used, unlike a killswitch that would lie dormant until it’s too late.
The original cheap price is just as artificial though, as the Chinese government puts massive subsidies into its EV industry.