The European Commission has published proposals aimed at reducing vehicles' carbon dioxide (CO2) emissions by 2030.

The move is designed to put further pressure on manufacturers to develop more hybrid and electric cars.

The Commission also wants to introduce an incentive scheme to encourage companies to produce more zero and low-emission cars.

Under its plan cars and vans will have to emit 15% less CO2 by 2025 compared with 2021 and 30% less by 2030.

"The proposed 30% reduction target for passenger cars is ambitious and realistic," the Commission said.