Fuel Fill-Up Mileage (Actual MPG)
Work out your real fuel economy and cost per distance from odometer readings and the fuel you added, free online.
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Fill the tank, note the odometer, drive, then refill and note the litres or gallons needed. Fuel economy = distance driven ÷ fuel added (mpg or km/L), and L/100 km = fuel ÷ distance × 100. Tracking this over several fill-ups reveals engine problems, tyre pressure issues and driving-style savings.