25% to 85%: The Range Inside T&E's Single EV Lifetime CO2 Headline
October 27, 2026 · Frisian News
Photo: Wikimedia Commons
Transport & Environment's 2017 VUB study found EV lifetime CO2 savings ranging from 25% on Poland's coal-heavy grid to 85% in Sweden. Three variables, grid mix, mileage and how long you keep the car, explain almost all of that spread.
Transport & Environment's flagship EV lifecycle study found CO2 savings ranging from 25% in Poland to 85% in Sweden. Those numbers come from VUB university in Brussels, which conducted the research on T&E's behalf in 2017.
T&E's clean vehicles officer Yoann Le Petit put the projection more boldly: electric vehicles will "emit less than half the CO2 emissions of a diesel car by 2030 including the manufacturing emissions." That estimate assumes EU grids continue to decarbonise at the rate T&E's modelling expects. In countries whose grids are not on that trajectory, the saving settles closer to 25% than 85%.
A 2025 Duke University study, reported by Innovation News Network, supplies a figure T&E's framing tends to skip. In their first two years of operation, battery-electric vehicles generate roughly 30% more CO2 than gasoline-powered equivalents when the entire production and use cycle is counted. Battery manufacturing and lithium extraction, still largely fossil-fuel-powered, create that opening carbon debt.
After two years of average driving, the Duke researchers found, the EV pulls ahead. Their model assumed an 18-year vehicle lifetime. Over that span, the gasoline car's full environmental cost, monetising both CO2 and air pollution damage, runs two to three-and-a-half times higher than the EV's. The Duke team used the Global Change Analysis Model and acknowledged one gap: they excluded the carbon cost of building and maintaining charging infrastructure.
ZeroCarbonDrive, drawing on lifecycle research from the International Council on Clean Transportation, MIT and the US Department of Energy, puts the credible range at 30-50% lower lifetime CO2 for an EV over 10-15 years. The battery manufacturing debt runs roughly 3-5 tonnes CO2 from the pack alone. At 12,000-15,000 miles a year on a typical grid, that debt is repaid within one to two years of driving, ZeroCarbonDrive notes.
Three variables drive most of the outcome: grid carbon intensity, annual mileage and how long the owner keeps the vehicle. ZeroCarbonDrive notes that a driver on a coal-heavy grid doing low annual mileage and trading in every two to three years "never fully captures the lifetime benefit the math assumes," even though no credible study in its review found the result reversed in favour of petrol.
T&E commissioned the VUB study and published it. T&E's own donor list for 2025 names the European Climate Foundation and ClimateWorks (over 1 million euros each) and the European Commission (500,000 to 1 million euros), the same Commission that writes the zero-emission vehicle rules T&E campaigns for. That does not make the numbers wrong; it does explain which questions the study frames carefully and which it leaves to the footnotes.
Independent research, including the Duke University work, broadly confirms the direction: EVs carry lower lifetime emissions across most realistic scenarios. How much lower depends on grid mix, mileage and ownership length, and the honest range runs from modest to large.
A 25% saving on Poland's grid is not the same story as an 85% saving in Sweden, and neither is a single headline.
Published October 27, 2026 · Frisian News