Guides for drivers
How to work out fuel economy, running costs and maintenance, with or without an app.
How to calculate your car's MPG
Calculate your car's MPG with the full-tank method: miles driven divided by gallons used, worked out from the litres you pump. Worked examples.
How to calculate fuel consumption in l/100 km
The l/100 km formula with worked examples: litres used ÷ kilometres driven × 100. Plus km/l, converting to MPG and handling partial fill-ups.
How to track car expenses
A simple system for tracking car expenses: what to record, which categories to use, how to handle receipts and how to turn it all into monthly totals.
How much does your car cost per mile?
Work out your car's real cost per mile or kilometre: add up a year of fuel, insurance, service and fees, divide by distance. Worked example included.
How to calculate the fuel cost of a road trip
Trip fuel cost = distance ÷ MPG × 4.546 × price per litre. Worked examples in miles and kilometres, plus how to make the estimate realistic.
How to track LPG consumption in a bi-fuel car
Track LPG (or CNG) and petrol separately in a bi-fuel car: log each tank on its own, calculate l/100 km per fuel and compare the real cost per kilometre.
How to keep track of oil changes and car maintenance
Set maintenance reminders by mileage and by date, whichever comes first. Which services to track, how to keep the odometer current and how to log the work.
How to find cheaper petrol and diesel prices near you
Find cheaper petrol and diesel without wasting the savings on detours: compare fuel prices on a map, know your area average and fill up where you already drive.
How to track fuel consumption
Track your car's fuel consumption in four steps: fill to full, note the odometer, repeat, then divide. What to record, how often and which tool to use.
How to calculate mileage (km/l) of a car or bike
Mileage in km/l is distance driven divided by fuel used. Worked examples for a car and a bike, plus conversions to l/100 km and MPG.