  Policies to reduce transport emissions often overlook the international flow
of used vehicles. We quantify the rate at which used vehicles generated CO2 and
pollution for all used vehicles exported from Great Britain; a globally leading
used vehicle exporter across 2005-2021. Destined for low-middle-income
countries, exported vehicles fail roadworthiness standards and, even under
extremely optimistic functioning as new assumptions, generate at least 13-53
percent more emissions than scrapped or on-road vehicles.
