The global drive towards sustainability has ushered in a new era of transportation, prominently featuring the rise of Battery Electric Vehicles (BEVs). The rapid rise of BEVs has been widely and rightfully hailed as a crucial milestone in promoting sustainable transportation and combating climate change. The existing empirical evidence provides undeniable support for the essential role of BEVs to support net zero targets. However, like most disruptive or emerging technologies, BEVs are not without their hidden effects. This paper seeks to explore and analyse these lesser-known effects, i.e., externalities, of BEV adoption. In doing so, it sheds light on the environmental, infrastructure, socio-economic and safety externalities of BEVs, aiming to promote a holistic understanding of their impact and to facilitate informed policy making. Furthermore, it highlights the critical role of public awareness and user education campaigns in maximising the benefits and mitigating the externalities of BEVs, along with the importance of maintaining a balance of information in developing such campaigns. It is argued that providing individuals and policymakers with accurate information, dispelling misconceptions, and promoting responsible BEV practices are essential for minimising the externalities. At a broader level, these discussions emphasise the importance of moving beyond mere tailpipe emissions towards a holistic, life-cycle-based approach in setting climate-change targets.