Originally Posted by JTECHSAFF

it will already be closed loop, if its new enough to fall into the new taxation class,

however,im sure each new car is classed for taxation during its type approval...i dont think you can change it.

Originally Posted by percybigun

yep, and there will be plenty of cars out there producing higher than standard emissions due to wear/neglect, and/or power modifications.

they wouldnt be able to administer every car in the country being tested individually, and they wouldnt want to open the floodgate to people claiming they have got lesser emissions than standard.

having 2 fuels on the car like LPG does get you a bit of a tax releif though.