The million mile car. All these announcements of million mile batteries left me wondering do million mile cars exist? how do they look? Not great to be honest see below. The average lifetime range of a ICE car is 150k miles and 15 years. Rough calculations project the million mile battery will increase car lifetime to 100 years or so. The EV you buy in the next few years will be a family heirloom handed down through the generations.