It might be less expensive due to the electrical powerplant. It will take a while before there is enough of a track record to know for sure. But, for example, electric cars are much lower maintenance than gas cars, as Tesloop as shown.
https://cleantechnica.com/2017/09/05/10492-tesla-model-s-mai...
https://www.tesloop.com/blog/2018/7/16/tesloops-tesla-model-...