What part seems to be more failure-prone on them? Does the failure rate eventually have some relation to weather conditions? I've never been in Albuquerque or anywhere else in the U.S.A., but have always heard about New Mexico and Arizona having extreme weather conditions, and probably the low humidity in the air and the high temperatures become an issue due to the cooling of those modern Lithium battery packs fitted to modern EVs in general.
BTW some Chinese electric buses had been tested in my hometown, but probably won't be adopted by local bus operators so soon due to the local power grid being quite prone to weather-related failure
