The electric vehicle era is here, and when its effects trickle down to the used-car market, auto dealers will have to rethink everything from the ground up.

That begins with this seemingly simple question: What do customers want in a pre-owned electric vehicle?

A panel of experts took on that question in the “Customer Satisfaction Has Changed in the EV Era” session during the Used Car Week conferences in Scottsdale, Ariz., using questions asked by consumers as a guide ...