I am in receipt of a fixed car allowace which is based on a scale of a qualifying number of miles a year. Should superanuation be deducted on this 'taxed, fixed car allowance'
Genearally, in the public sector this type of fixed taxable car allownace is not superannuationable. You should check the rules of your superannuation scheme to find out for sure whether this and other taxable allowances are superannuationable.