Start with the price saving
Multiply the litres you actually plan to buy by the price difference. Buying 45 litres at 1 kr less per litre saves 45 kr before other costs. Do not use the full tank capacity if you only need a small top-up.
Include the entire detour
Count extra distance compared with your original journey. A station six kilometres off the route and back adds twelve kilometres. At 6.5 L/100 km and 22 kr/l, that costs 17.16 kr in fuel, leaving 27.84 kr of a 45 kr saving.
Add other costs
Tolls, parking, wear and time can remove the remaining saving. A 15-minute detour to save 10 kr may be less useful than a station on your route. Your time and need for a break also matter.
Find the break-even point
If you plan to buy 40 litres and the extra journey costs 24 kr, the price must be at least 0.60 kr/l lower to cover that cost. Allow for possible price changes. These figures are worked examples.
Combine stops
Refuelling may fit a shopping trip or a rest stop you were already planning. Compare against the journey you would actually make, check current prices and choose a convenient stop without unnecessary driving.
Heading somewhere?
Take MileHalo along.
Find stations, compare reported prices and see road reports. Check current prices and conditions before choosing a stop.
See MileHalo in the App StoreEnglish edition, 15 October 2026. Norwegian regulatory sources apply to Norway. Check local rules and your vehicle handbook. Figures are examples, not live prices.