The States of Jersey made £1.5 million in Vehicle Emission Duties (VED) last year.
This figure is the highest recorded in the last seven years, according to a Freedom of Information request.
Vehicle Emission Duties were introduced under the 2010 Budget. It is charged on motor vehicles when they are first registered in Jersey and are then calculated on a vehicle's CO2 emissions.
The duty is structured with a range of bands according to the vehicle’s emissions or engine size.
The idea behind it was to incentivise the choice of less polluting vehicles, with the least polluting vehicles currently paying £0 in VED and the highest polluting vehicles being charged VED of £1,800.