A report has questioned the use of fuel cards by Northern Territory politicians and public servants.

The Auditor-General's report, tabled in the Legislative Assembly, detailed fuel purchases by the Chief Minister's Department, the Legislative Assembly Department and the Aboriginal Areas Protection Authority over the last financial year.

It says there is no evidence any of the agencies conducted regular, detailed analysis of fuel purchases, including kilometres travelled or the nature of transactions.

More than $290,000 worth of fuel was purchased using government-issue cards during the financial year.

The report found six fuel cards allocated to members of parliament could not be analysed because there were too many errors or omissions.

The report also found there were many cases where multiple fuel cards were issued.

It recommends that the use of fuel cards should by reviewed monthly, to prevent misuse.

While concluding that the probability of significant fraud was low, it did list a number of inconsistencies.

In one instance, it appeared a vehicle was filled with twice as much fuel it was capable of holding.

There were a number of cases of unleaded fuel being purchased for diesel vehicles.

There were also numerous cases of purchase details being entered incorrectly or not at all.

Of the 35 Legislative Assembly Department vehicles, only seven seemed to have the correct odometer reading entered on more than 95 per cent of transactions.

The Auditor-General's examination was brought forward last year after Country Liberals politician Larisa Lee said she had spent more than $17,000 on fuel in seven months.

The Legislative Assembly was told that Ms Lee and her partner were sometimes in Darwin for parliamentary sittings when her fuel card was being used hundreds of kilometres away.

No action was taken against Ms Lee.