Nations slow to adopt electric vehicles are likely to end up with a glut of used gasoline cars if they fail to accelerate the shift to electrification, according to a report by London-based think-tank Carbon Tracker.

With China, North America and Europe phasing out internal combustion engine vehicles, automakers may resort to selling older, polluting models in Africa, Asia and South America, Ben Scott, senior automotive analyst at Carbon Tracker, wrote in the report released Friday.