Britain’s current electric cars show less than half the lifecycle emissions of combustion cars
Researchers used nationwide vehicle records to estimate current battery models at 88 grams of carbon dioxide equivalent per kilometre over their lifecycle, compared with 254-270 grams for combustion cars and 190 grams for hybrids. The model combines real-world mileage and survival data; its forward estimates depend on recent trends continuing.
Science··Night
Real use enters the lifecycle estimate
The peer-reviewed study used mileage and survival information for every electric car registered in Britain, then compared battery models with combustion and hybrid vehicles. This design addresses two quantities that can change a lifecycle calculation: how far a vehicle is driven each year and how long it remains in use. The paper distinguishes measured fleet history from estimates for current models, which rely on a statistical model rather than completed lifetimes.[1]
Three lifecycle estimates
For current battery electric vehicles, the model estimated 88 grams of carbon dioxide equivalent per kilometre across the lifecycle. The comparable range for conventional combustion vehicles was 254-270 grams, while hybrids were estimated at 190 grams. On those modelled figures, the battery-electric value is below half of either comparison. The unit covers attributed lifecycle greenhouse gases per kilometre; it is not a tailpipe-only measurement and it does not say every individual car has the same footprint.[1]
Where the projection begins
Earlier battery-electric generations in the dataset travelled less and had shorter service lives than conventional vehicles, yet the paper estimated lower lifecycle emissions for them too. For vehicles bought in 2026, the authors estimated that annual mileage and lifetime would match conventional cars if recent trends continue. That condition matters: the future parity is a projection. The 88-gram estimate similarly combines observed use with modelled survival, so later fleet data can test it.[1]
