Study: Electric Cars Cleaner Than Keeping Old Vehicles Running

The Environmental Impact of Electric Vehicles vs. Older Combustion Engine Cars

When it comes to the environmental impact of vehicles, a common argument is that older cars with petrol or diesel engines are more sustainable than new electric vehicles (EVs). This idea often surfaces in discussions about the green credentials of EVs and is used by some to justify not replacing older internal combustion engine (ICE) vehicles with electric alternatives. However, this assumption may not hold up under closer scrutiny.

Some experts argue that maintaining and using an older vehicle can save significant amounts of resources such as water, steel, rubber, and plastic. They also claim that it avoids unnecessary consumption. Critics of electric mobility often emphasize that pollution isn't just about tailpipe emissions but includes the entire life cycle of a vehicle—from manufacturing to usage and recycling.

However, recent research challenges this perspective. A study conducted by the Institute for Energy and Environmental Research (IFEU) in Heidelberg highlights that the initial premise is flawed. The study was updated due to rapid changes in Germany's electricity supply and advancements in electric car technology, including longer ranges and improved battery systems.

The original study found that electric cars registered in 2023 produce up to 59% fewer greenhouse gas emissions over their lifetime compared to similar combustion engine vehicles. The point at which an electric car becomes more climate-friendly than a combustion engine car varies between 25,000 and 45,000 kilometers, depending on the specific vehicle being compared.

The latest IFEU study considers the current energy mix in Germany, where over 62% of electricity production is from sustainable sources. It also factors in the climate impact of car production based on a vehicle being used for up to 220,000 kilometers. Researchers note that the average lifespan of a car is around 16 years, so a vehicle purchased at the start of 2022 would be expected to last until the end of 2037.

According to the study, even after shorter distances, the CO2 emissions from operating an ICE vehicle exceed all other emissions combined. This means that the climate gases emitted from burning fossil fuels become a decisive factor after 40,000 kilometers for petrol cars and 25,000 kilometers for diesel cars.

As a combustion engine or plug-in hybrid is used for longer periods, emissions increase steadily during the usage phase. This leads to a higher proportion of fuel-related emissions compared to the production and recycling of the vehicle. These findings challenge the myth that older cars are more environmentally friendly than new electric cars when used over extended periods.

It’s important to recognize that the environmental impact of a car extends beyond its construction. While some experts highlight the environmental consequences of mining rare minerals like lithium and cobalt for batteries, advocates of electric vehicles counter that extraction methods are improving alongside the longevity of batteries that use these materials.

In conclusion, while there are valid concerns about the environmental impact of producing electric vehicles, the overall lifecycle analysis suggests that they are significantly more sustainable than traditional combustion engine cars, especially when considering long-term usage and improvements in renewable energy sources.