The European Union's CO2 emissions fell from about 4 billion tonnes in 2000 to 3 billion tonnes around 2025.

Omissions

• The claimed '3 billion tonnes' for the EU matches total greenhouse-gas emissions (3.3 billion tonnes CO2-equivalent in 2024 per Eurostat), not CO2 alone, which is lower (roughly 2.7 billion tonnes).
• The 2000 figure of 'about 4 billion tonnes' is closer to total EU greenhouse-gas emissions (CO2-equivalent) than to CO2-only emissions, which were roughly 3.5–3.7 billion tonnes.
• EU emissions reductions are partly attributable to deindustrialisation and offshoring of carbon-intensive production; the claim presents the decline as a purely domestic achievement without this context.
• No single source found provides both the exact 2000 and the 2025 EU CO2 figures used by the speaker; the assessment relies on official GHG series and secondary CO2 aggregates.

Sources

• PrimaryEurostat — 2024 EU greenhouse gas emissions: -20% since 2013In 2024, the EU economy's greenhouse gas emissions by economic activities and households totalled 3.3 billion tonnes of CO2 equivalents.
• PrimaryEuropean Environment Agency — Total net greenhouse gas emission trends and projections in EuropeNet greenhouse gas (GHG) emissions in the European Union fell by 36% between 1990 and 2023... Preliminary estimates indicate that net EU GHG emissions fell a further 2.5% below 2023 levels in 2024.
• SecondaryStatista — GHG emissions in the EU: Statistics & FactsIn 2023, total net GHG emissions in the EU decreased by eight percent year-on-year to 2.9 billion metric tons of CO₂ equivalent (GtCO₂e).