At least in the US, the current proposed plan is to phase out leaded avgas by 2030: https://www.faa.gov/aircraft/draft_docs/draft_unleaded_avgas_transition_plan

At least in the US, the current proposed plan is to phase out leaded avgas by 2030: https://www.faa.gov/aircraft/draft_docs/draft_unleaded_avgas_transition_plan https://www.faa.gov/aircraft/draft_docs/draft_unleaded_avgas...