Free tool
E20 Mileage Tracker & Fuel Log
Stop guessing your mileage - measure it. Log each fill-up and see your real km/l, how it's trending, and exactly how much E20 changed your fuel economy. 100% private: your data stays on your device.
Your fuel log
| Date | Odometer | Litres | km/l | Fuel | Cost |
|---|
Mileage (km/l) is calculated tank-to-tank: the distance since your last full-tank fill ÷ litres of the latest fill. Add at least two full-tank fill-ups to see it.
How to track your real E20 mileage
- Fill the tank to full and note the odometer. (Optionally set your pre-E20 mileage above.)
- Drive normally until you refuel.
- Fill to full again and log the date, new odometer and litres. That's one data point.
- Repeat. After a few fill-ups you'll see your true average km/l and whether E20 really changed it.
Your data is private. Everything is stored only in this browser (localStorage). We never upload it anywhere. Clearing your browser data will erase your log, so export a CSV to keep a backup.
Real mileage depends on driving style, traffic, tyre pressure, AC use, load and servicing - not fuel alone. ARAI puts the E20 efficiency drop at ~1–6% for tested vehicles; many owners of older vehicles report more.