Quick answer
Apps or onboard computers log distance vs. fuel to calculate mpg or L/100km. Drivers can spot trends, find inefficiencies, and improve usage.
Detailed answer
Whether it’s a smartphone app (Fuelio, Spritmonitor, etc.) or a built-in trip computer, tracking fuel usage reveals real-world mpg. Record odometer readings and gallons at each fill-up, then watch your mpg trend up or down over weeks. This data helps you see if new tires, changed routes, or driving style modifications affect usage.
Fleet managers do likewise for multiple vehicles, identifying best practices or mechanical issues. Some systems also estimate carbon footprint or cost per mile. By tracking, you can pinpoint underinflated tires, wasted idling, or worn parts dragging mpg down. Adjusting after seeing real numbers fosters more economical driving and helps with budgeting fuel expenses.
