Yes. In general, Prius Prime's performance will be affected just like a gas-powered vehicle. Extra cabin heating and other factors will use up electricity that could be used for driving, reducing EV Mode range. [prime_2021_ev_range] However, an electric heater has been installed inside the battery pack to boost battery temperature. This enhances EV mileage and drivability in cold temperatures and reduces engine startup during EV Mode. And don't worry, if your battery ever runs low, Prius Prime will seamlessly shift into hybrid mode to keep you going.