Fuel Cost Per Year
Calculator

It typically needs your annual mileage (or kilometers driven per year), your vehicle's fuel consumption rate, and the average price of fuel. From these, it calculates total fuel used over the year and multiplies by price to project annual cost.

Unlike a single trip with a known distance, annual mileage depends on driving habits that vary week to week and season to season — commuting patterns, road trips, and seasonal driving changes all affect the total, so most people estimate it from odometer readings over a past period rather than guessing.

Quite sensitive, since fuel cost scales linearly with price — a 10% increase in fuel price produces roughly a 10% increase in projected annual cost, all else equal. Because fuel prices can fluctuate significantly over a year, the estimate is best treated as a snapshot based on current prices, not a guaranteed forecast.

Assuming the vehicle with better MPG or lower L/100km will always be cheaper overall, without considering that higher annual mileage amplifies the fuel cost difference, while low annual mileage may make the efficiency difference between two vehicles financially negligible over a year.

Not directly — it typically uses a single average consumption rate for the year, but real-world consumption is often higher in winter (cold starts, heating, snow) and can be lower in ideal summer highway conditions. For a rough annual estimate this simplification is usually acceptable.