For Australian sites, the average fuel consumption drives the car tax code for LCT purposes.
Go into Franchise Data/Model variants and load the relevant variant:
Select Amend:
Enter the Average fuel consumption:
Select Save and Exit
Select Franchise Data/Reports and Enquiries/User defined reports - report CT1 Update Car Tax Code:
Tick "Update Variant file (Y/N):
Select OK
This report checks the average fuel consumption and updates the car tax code to the relevant code.