Published: January 24th, 2024,
Last updated: May 30th, 2025

EU fleet legislation has not led to the desired reduction in CO2 emissions from newly registered vehicles. Only after 2020, eleven years after the first CO2 fleet limit regulation came into force, which prescribes specific upper limits for CO2 emissions for manufacturers, did CO2 emissions from passenger cars begin to fall significantly. The decline was also only due to the higher market share of battery electric vehicles. CO2 emissions from new vehicles with combustion engines did not decrease significantly. The CO2 fleet legislation is the EU’s key instrument for reducing CO2 emissions from new vehicles.