Meanwhile London has the bold plan to make mandatory the Euro6 in the Ultra Low Emission Zones by 2020 - when those engines will be 10yrs old. https://tfl.gov.

Meanwhile London has the bold plan to make mandatory the Euro6 in the Ultra Low Emission Zones by 2020 - when those engines will be 10yrs old. https://tfl.gov.uk/modes/driving/ultra-low-emission-zone https://tfl.gov.uk/modes/driving/ultra-low-emission-zone