What is the primary difference between Battery Electric Vehicles (BEVs) and Plug-in Hybrid Electric Vehicles (PHEVs)?

The primary distinction between Battery Electric Vehicles (BEVs) and Plug-in Hybrid Electric Vehicles (PHEVs) lies in their power source and drive system. BEVs operate solely on electric power; they are equipped with large battery packs that allow them to run entirely on electricity without an internal combustion engine. This characteristic enables BEVs to produce zero tailpipe emissions, contributing to a cleaner environment.

On the other hand, PHEVs feature both an electric powertrain and a gasoline powertrain, allowing them to switch between electric and gasoline operation. This hybrid nature gives PHEVs the flexibility to drive using electric power for shorter distances, while having the gasoline engine as backup for longer trips, ensuring greater range compared to BEVs.

The other choices incorrectly represent the fundamental characteristics of these vehicle types.