Don't EVs carry a bigger footprint than petrol cars, once battery manufacturing is counted?

“An EV emits nothing while driving, but making its battery releases so much CO₂ that the total is no better than a petrol car — worse, even.” This is among the most persistent criticisms of electric cars, and it is partly right: EVs do emit more during manufacturing, especially in battery production. What has to be judged, though, is not a single moment on the production line but the total emitted across the whole life, from manufacture to disposal.

The short answer: (1) manufacturing an EV emits about 40% more than a petrol car, (2) that gap is repaid after roughly one to two years of driving — about 17,000 km, and (3) over the whole life an EV emits more than 70% less. Let’s follow that through with life-cycle assessment (LCA).

What LCA is: measuring a life, not a moment

Comparing environmental impact properly means counting manufacture, use and disposal together. That is what life-cycle assessment does. For cars, emissions fall broadly into manufacturing (building the body and the battery) and use (burning fuel or drawing electricity).

A petrol car emits comparatively little in manufacturing but keeps emitting every time it is driven. An EV is the reverse: emissions come first, in production and especially in the battery, while emissions in use depend on the electricity it draws. Cut the story at manufacturing and the EV looks bad; look at the whole life and the EV wins. Since the two framings give opposite answers, counting it all through with LCA is the precondition for a fair comparison.

The manufacturing gap is about 40%, and driving repays it

The numbers. In a 2025 analysis of Europe, the International Council on Clean Transportation (ICCT) puts manufacturing emissions for a battery electric car about 40% above a petrol car’s [1]. That comes mainly from battery production — exactly as critics say.

What follows is the part that matters. The same analysis finds that this manufacturing debt is paid off after about 17,000 km, one to two years of driving [1]. Because an EV emits so little in use, it closes the gap the more it is driven, and overtakes the petrol car fairly early. At Japan’s average annual mileage of around 10,000 km, the manufacturing disadvantage is cancelled in roughly two years.

Over the whole life the gap widens sharply. The ICCT puts lifetime emissions for an EV newly registered in Europe at 63 gCO₂e/km, against 235 gCO₂e/km for a petrol car — 73% lower [1]. Charge on 100% renewable electricity and the reduction reaches 78% [1]. “More emissions during manufacturing” is true, and “far cleaner over a lifetime” remains true alongside it.

The key variable is the electricity: what Japan’s power mix means

There is a condition attached. Emissions during use depend on how the electricity was generated. In a system heavy with coal, driving emits more and the EV’s advantage narrows.

When China’s mix was more coal-heavy, one estimate stretched the break-even point to about 127,000 km (roughly 79,000 miles) [1]. In Norway, where generation is almost entirely hydro, the break-even is very short indeed. How clean an EV is moves with the power mix of the country it is driven in.

Japan still leans heavily on thermal generation, so an EV here emits more in use than one in a renewables-rich country. That should be admitted plainly. Two things still leave the EV ahead.

First, mainstream analyses find that even on Japan’s average power mix, an EV comes out below a petrol car over the full life cycle.

Second, there is the time axis: the grid decarbonises year by year. A petrol car burns fuel for its whole life, while the same EV gets cleaner as generation shifts to renewables. When the ICCT says EVs are getting cleaner faster than expected, this improvement on the supply side is what it is pricing in [1].

The questions that remain: mining, where batteries are made, recycling

Environmental impact is not only CO₂. To be straight about it: the habitat destruction, water use and labour problems associated with mining the lithium and cobalt that go into batteries are separate questions that deserve their own answers (a separate FAQ covers them). And because the power mix where a battery is made drives its footprint, cells built on clean electricity carry lower manufacturing emissions.

One answer to these problems is recycling — recovering used batteries as a resource. Establish a closed loop that feeds recovered metals into new cells, and both the volume mined and the emissions of manufacturing fall. Europe and China are already building the rules and the industry for battery recycling, and the shift from “make and be done” to “circulate and reuse” has begun.

Where this is heading: the gap widens

Both technology and society point to the gap widening. First, cleaner battery production and higher energy density shrink manufacturing emissions themselves. Second, as national grids decarbonise, emissions in use keep falling. Third, recycling reduces the burden of mining and production. A petrol car has no equivalent path to becoming cleaner the more it is driven and the later it gets.

In short, “EVs emit a lot of CO₂ making the battery” is a fact about the first half of the story. Counted across a lifetime, an EV emits more than 70% less than a petrol car, and the gap grows as the grid decarbonises. Measuring with the yardstick of a whole life, rather than a moment in the factory, is what answers this question.

Summary

Manufacturing an EV emits about 40% more than a petrol car. True, and mostly the battery.
The gap is repaid after about 17,000 km (one to two years), and lifetime emissions are 73% lower (up to 78% on renewable electricity) [1].
How clean an EV is depends on the power mix. Japan is thermal-heavy, yet the EV still wins on LCA, and improves as the grid decarbonises.
Mining, where batteries are made, and recycling remain open questions, eased by circular use.
Unlike a petrol car, an EV gets cleaner the more it is driven and the later it gets.

The yardstick is not the moment of manufacture but the whole life from production to disposal. On that measure the advantage is clear.

References and data sources

[1]: International Council on Clean Transportation (ICCT). (2025, July). Life-cycle greenhouse gas emissions from passenger cars in the European Union: A 2025 update and key factors to consider. https://theicct.org/publication/electric-cars-life-cycle-analysis-emissions-europe-jul25/ / ICCT. (2025). Electric cars are the cleanest — and getting cleaner faster than expected. https://theicct.org/pr-electric-cars-getting-cleaner-faster/ (manufacturing +40%, break-even about 17,000 km, lifetime emissions BEV 63 vs petrol 235 gCO₂e/km, 73% lower and 78% on renewables)