Dr. Aoife O'Grady:

We do not have a breakdown. Vehicles are not coded by weight in the national vehicle and driver file. We know whether a vehicle is battery operated or plug-in hybrid. Within the traditional internal combustion engine, ICE, vehicles there is a breakdown of vehicle types but in electric it just comes to us defined as battery or plug-in hybrid.

I understand the points about vehicle weight and size but a large EV is still far more climate effective, even if powering off a traditional energy supply, than the equivalent large size vehicle would be in an ICE.