Fuel prices went up on 7 October 2026, so a long December drive will cost more than it did last year. A quick calculation helps you avoid nasty surprises.
The basic fuel formula
Fuel cost = (distance ÷ 100) × your car’s litres per 100 km × the price per litre.
Worked example (illustrative numbers only)
| Item | Example |
|---|---|
| One-way distance | 600 km |
| Return distance | 1,200 km |
| Car fuel use | 8 litres per 100 km |
| Fuel needed | 12 × 8 = 96 litres |
| Price per litre | Use the current price on the day you fill up |
| Fuel cost | 96 × price per litre |
Replace the example numbers with your own. Add a buffer for traffic, detours and extra air-conditioning use.
Other costs to include
- Tolls: check the toll plazas on your route and the current tariffs.
- Accommodation: book early for the festive season, since prices rise.
- Food and snacks: pack a cooler box to avoid expensive roadside meals.
- Emergency money: a small reserve for breakdowns.
Check your car before you go
- Tyre pressure and tread, including the spare.
- Oil, coolant and brake fluid levels.
- Lights, wipers and battery.
Save money on the road
- Share the trip with family or friends and split costs.
- Travel off-peak when possible to reduce traffic and fuel use.
- Drive steadily and respect speed limits.
Stay safe
Take breaks every couple of hours, do not drive tired, and never drink and drive.
Disclaimer: this website is not a lender and does not give financial advice. The information is general and may change. Always confirm details with the relevant provider or official source before you decide.
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