Here’s one for rented cars: You never have to fill the car up ’til when the automatic latch goes off – all petrol tanks can be ‘over-filled’ beyond the ‘full’ mark. You can often save yourself a couple of dollars not waiting for the pump to cut off, and still have a ‘full’ reading on the indicator.

Here’s my tip, Petrol is the lowest on Tuesday nights/Wednesday mornings. It goes up on Wednesday night/Thursday mornings. Simply fill up on Tuesdays.