Are electric vehicles better for the environment than gas-powered vehicles?

Electric vs. gas — I'll pull the latest life-cycle emissions data to answer your question.

Yes, electric vehicles (EVs) are generally better for the environment than gas-powered vehicles on a lifecycle basis, but with important caveats.

1. Lifecycle Greenhouse Gas Emissions Are Lower

Multiple lifecycle analyses that include vehicle manufacturing, battery production, fuel/electricity production, driving, and recycling find EVs are cleaner:

•Battery electric cars sold today in Europe produce 73% less life-cycle greenhouse gas emissions than gas cars, even when factoring in production, according to new research from the International Council on Clean Transportation (ICCT)

•In the U.S., researchers at MIT found that EVs emit around 40-60% fewer lifecycle emissions than gas vehicles throughout the U.S.

•In most locations, EVs save between 40% and 60% of emissions as compared with combustion vehicles

•The Argonne National Laboratory GREET Life Cycle Assessment Model found that EVs have 46% lower lifecycle emissions

•The U.S. Environmental Protection Agency states: "The greenhouse gas emissions associated with an electric vehicle over its lifetime are typically lower than those from an average gasoline-powered vehicle, even when accounting for manufacturing."

Full lifecycle studies that account for battery manufacturing, mining, grid electricity, and end-of-life recycling still show EVs cutting lifetime greenhouse gas emissions by roughly 50 to 70 percent compared with gasoline cars

2. Why Manufacturing Is More Polluting Upfront, But Repaid Quickly

•It's true that manufacturing EVs creates more emissions upfront – about 40% more than making a gas car, mostly due to the battery. Another estimate found production of a full-sized long-range electric vehicle adds about 6 tons of CO2 equivalent emissions, 68% higher than the production of a comparable gasoline car. Most of these increased emissions come from battery manufacturing and resource extraction

•However, this "carbon debt" is repaid within 1-2 years of driving due to their zero tailpipe emissions

•That extra emissions load is usually wiped out after about 17,000 km (10,563 miles) of driving, which most drivers hit in a year or two. For a Tesla Model S size vehicle, it takes about 19,000 miles (16 months) of driving to offset the increased emissions, and for smaller EVs like the Nissan Leaf, ~4,900 miles

3. Grid Mix Matters, But EVs Are Cleaner Even on Dirty Grids

•The electricity production mix is the most important contributor to regional variation in EV emissions savings. Cleaner power production means bigger savings.

•There is no zip code in the country where EVs produce higher lifecycle emissions than internal-combustion vehicles

•Even with the country’s most carbon-intensive electricity mix, however, BEVs do not raise lifecycle emissions compared to ICEVs

•EVs powered by fossil fuel power still contribute to pollution, but electric vehicles' efficiency advantage remains. EVs use approximately 87-91% of battery energy for propulsion, whereas gasoline vehicles convert only 16-25% of fuel energy into motion

•Going electric also means taking emissions out of cities, improving local air quality. Even if charging an EV still results in emissions, they are usually produced farther from where many people live

An ICE vehicle has a more significant environmental impact because of the continued fossil fuel extraction and refining needed to produce gasoline, and the combustion of gasoline in the internal combustion engine. Battery electric vehicles have no tailpipe emissions

4. Remaining Environmental Impacts and Caveats

EVs are not zero-impact:

•Mining: Electric vehicles are powered by lithium-ion batteries. Mining lithium and manufacturing these batteries is water-intensive and contributes to air, soil, and water pollution. The process is water-intensive, using up to 500,000 gallons of water per ton of lithium carbonate produced, and uses toxic chemicals like hydrochloric acid, which can leach into local ecosystems. The chemicals and mining processes used inevitably lead to water, soil, and air pollution

•Electricity source: The power you put into your EV is only as clean as the grid from which it’s drawn. The electricity source for charging EVs can be cause for concern. While the EU grid is getting cleaner - renewables expected to generate 56% of Europe's electricity by 2025, up from 38% in 2020 - benefits will increase as the grid decarbonizes.

•Disposal/Recycling: Less than 5% of lithium-ion batteries are actually recycled. If these batteries aren’t disposed of properly, then they can eventually leach chemicals into surrounding soil

•Other impacts: Studies note that while EVs reduce greenhouse gases, they may not reduce other environmental problems like particulate matter from tires and heavier vehicle weight, and resource constraints remain concerns.

Bottom Line

When considering the full life cycle of the vehicle, electric cars are cleaner and greener than their conventional fossil fuel-burning counterparts. Even though building an electric car may produce more emissions than a conventional car, mostly due to the energy intensity of battery production, these emissions are dwarfed by those saved over the lifetime use.

The advantage grows over time and as the grid gets cleaner: "Battery electric cars in Europe are getting cleaner faster than we expected and outperform all other technologies, including hybrids and plug-in hybrids". Hybrids and plug-in hybrids only cut lifetime emissions by 20% and 30%, respectively, compared to gas cars.

Robust, up-to-date lifecycle studies converge on the conclusion that EVs produce lower emissions in most real-world cases today, and the gap should widen as electricity generation and battery manufacturing decarbonize.

Citations (3)

1electrek.coNot yet classified
EVs are 73% cleaner than gas cars – even with battery production
Backs: “Multiple lifecycle analyses that include vehicle manufacturing, battery production, fuel/electricity production, driving, and recycling find EVs are cleaner: Battery electric cars sold today in Europe produce 73% less life-cycle greenhouse gas emissions than gas cars, even when factoring in production, according to…”
2insideevs.comNews and media
Yes, EVs Really Are Cleaner Than Gas Cars. Here's By How Much
Backs: “In the U.S., researchers at MIT found that EVs emit around 40-60% fewer lifecycle emissions than gas vehicles throughout the U.S. In most locations, EVs save between 40% and 60% of emissions as compared with combustion vehicles”
3get-green-now.comNot yet classified
Environmental Impact of Electric Car Batteries (Production, Use & Disposal)
Backs: “It's true that manufacturing EVs creates more emissions upfront – about 40% more than making a gas car, mostly due to the battery. Another estimate found production of a full-sized long-range electric vehicle adds about 6 tons of CO2 equivalent emissions, 68% higher than the production of a comparable gasoline car.”