The United Nations says rich countries are dumping millions of highly polluting used cars on poorer nations.
An investigation by the UN Environment Programme found that between 2015 and 2018, 14 million old, poor quality vehicles were exported from Europe, the US and Japan.
More than 40% of them went to Africa. Few African countries have regulations on car imports.
In Uganda the average age of a diesel vehicle imported in 2017 was more than 20 years old.