Superable: So You Thought Electric Cars Would Save the Planet? Think Again.

Electric vehicles (EVs) are often hailed as the cornerstone of a clean energy future, but emerging research suggests that the environmental benefits of EVs may not be as clear-cut as widely believed.

While EVs produce zero tailpipe emissions, a deeper examination of their full lifecycle — from production to disposal — reveals troubling trade-offs that may make them more damaging to the environment in key areas compared to traditional gasoline cars.

A 2021 study by the National Academies of Sciences, Engineering, and Medicine highlighted that manufacturing an EV, particularly its battery, emits up to 74% more carbon dioxide equivalent (CO₂e) than producing a comparable internal combustion engine vehicle (ICEV).

The report found that producing a mid-sized EV like the Tesla Model 3 generates roughly 12 metric tons of CO₂e before it even hits the road, versus about 7 metric tons for a Toyota Corolla. Much of this disparity comes from mining and refining critical battery minerals like lithium, cobalt, and nickel.

Dr. Anders Hammer Strømman, co-author of a landmark lifecycle analysis published in Nature Sustainability (2019), warned, “The rush to electrify transport is creating blind spots regarding the environmental and social costs of mineral extraction. We see significant ecological disruption, particularly in fragile ecosystems like the Atacama Desert where lithium is sourced.”

Indeed, lithium mining consumes vast amounts of water — approximately 500,000 gallons per ton of lithium extracted, according to the Institute for Energy Research (IER).

This has led to water scarcity concerns in regions like Chile and Argentina, where indigenous communities report degraded land and polluted water sources due to mining activities. The IER notes that as global EV demand rises, mining-related damage is projected to grow substantially.

EVs also have a hidden carbon footprint that depends heavily on how electricity is generated. A 2020 report by the Manhattan Institute concluded that in regions where the grid relies on coal or natural gas — as is the case in many parts of the U.S., China, and India — EVs can produce more lifetime emissions than efficient gasoline cars.

“When you factor in the emissions from electricity generation, an EV may emit up to 15% more CO₂ over its lifetime than a modern hybrid vehicle,” said Mark P. Mills, the report’s author and a senior fellow at the Manhattan Institute.

End-of-life disposal further complicates the EV environmental equation. A 2023 European Environment Agency report pointed out that current recycling infrastructure is ill-equipped to process large volumes of end-of-life EV batteries.

Without significant advances in battery recycling, hazardous waste from old batteries could pose a major environmental challenge within the next two decades. As Professor Linda Gaines of Argonne National Laboratory notes, “We risk creating a battery waste crisis if we don’t accelerate recycling technology and policy.”

That’s not to say gasoline vehicles are off the hook. The U.S. Environmental Protection Agency (EPA) estimates that conventional vehicles are responsible for about 28% of U.S. greenhouse gas emissions, primarily from tailpipe exhaust. However, the data increasingly suggests that simply swapping gas tanks for batteries isn’t a panacea for climate change.

“EVs are part of the solution — but they aren’t the solution,” cautioned Dr. Graham Conway of the Southwest Research Institute in a 2022 conference presentation. “If we ignore the emissions and environmental damage embedded in the production and energy supply chain, we risk creating a system that looks clean on the surface but is dirty underneath.”

As policymakers and consumers push toward mass adoption of electric vehicles, experts urge a more nuanced approach: one that prioritizes cleaner grids, sustainable mining practices, and robust battery recycling infrastructure. Without these, EVs may fall short of delivering the environmental promise that has propelled their popularity.