EMISSIONS: E.U. stiffens 2021 CO2 car emissions cap Published: Wednesday, February 26, 2014 The European Parliament voted yesterday on an agreement to decrease CO2 car emissions to 95 grams a kilometer in 2021. Please subscribe to ClimateWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.