There are a few metrics here that we talk about when we talk about engine life so we are going to use the same talking about electric vehicles batteries/motors. An electric vehicle battery lasts about 200,000 miles. This is what we hope to expect from most traditional combustion engines as well. Although across the many makes and models of cars we see trends and see engines that go well past that benchmark and other engines that do not quite break 150,000 miles before their engine goes caput. This figure sounds good at first, but we simply do not have the data for electric batteries like we do for regular combustion engines. We have seen millions of combustion engines and we have a good idea of what to expect. Electric vehicle batteries are newer and we have less data to see what cars truly do last 200,000 miles. Further, we don't know if we can always expect that from any electric vehicle that is purchased right off the factory line. For those of us who do not know how long it takes to get to 200,000 we can do some quick math. Generally the average American drives 12,000 to 15,000 miles per year, that means the engines should last anywhere from 13 to 20 years depending on use, maintenance and how much one drives per year. We can only hope at this point that the manufacturers are accurate and that these vehicles will last up to 200,000 miles.