Consumer Reports shares insights about electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) from its latest reliability survey, including the most reliable electric car.
Engine major, engine cooling, transmission major, drive system, electric motor and EV battery problems are more likely to take a car out of service and to be more expensive to repair than the other problem areas. Consequently, we weight these areas more heavily in our calculations of model year overall reliability verdict. Problems such as broken trim and in-car electronics have a much smaller weight. Problems in any area can be an expense and a bother, though, so we report them all in the reliability history charts.
They literally do not do this.
From their site: