Air Filter Check: Inspect your air filter engine element immediately; if it's dirty or clogged, replace it to restore optimal engine breathing.
Tire Pressure Adjustment: Cold rubber or low pressure drags mileage down drastically. Match factory pressure bounds for optimized rolling resistance.
Suspension & Wheel Alignment: If your alignment is drifting, you're wearing out tires prematurely and introducing dragging forces.
Driving Style Adjust: Slow down! Remember, it's a Prius, it's not meant to be driven like a sports car. Glide, coast, and brake gently to maximize regeneration.
Estimated Fuel Remaining--
Safe Distance To Empty--
*Leaving a safe 5L / 1.32 gal reserve before dry.
At this rate your total distance for trip will be --To reach this distance, you will need to add -- to fill to full.
Confidence Metric--
Database History Logs
iPhone Standalone Setup:
Tap Safari's share action icon (the square with up-arrow) at the bottom.
Scroll down and tap "Add to Home Screen".
Launch full screen from your device home screen!
📱 App Offline Access Available
Save this to your phone to access diagnostics and logs anytime, even in low service zones.
No logs compiled. Save a fill-up to kickstart intelligence tracking.
Legal Disclaimer & Terms: Prius, Hybrid Synergy Drive, and all associated marks are registered trademarks of Toyota Motor Corporation. This application is an independent hobbyist project and is not affiliated with, endorsed by, or associated with Toyota in any capacity. Calculations, estimations, and Distance-to-Empty (DTE) projections are mathematical approximations designed to account for environmental variations like rubber fuel bladder sizing quirks. However, sensors, driving behaviors, outside elements, and battery state variables may introduce unpredictability. Do not rely solely on this tool to evaluate exact mechanical conditions. Use appropriate judgement, stay attentive to warning lights, and do not drive with empty levels. The developer disclaims all liability for run-out events, mechanical damage, or fuel system failures resulting from utilization.
👋 Welcome Gen 2 Prius Driver!
This companion was custom engineered to solve the #1 design quirk of the 2nd Generation Prius: guessing how much fuel you actually have left!
Because the Gen 2 contains a flexible rubber fuel bladder in the tank, its capacity fluctuates constantly, shrinking in the winter cold and expanding in summer heat. Your dashboard gauge often jumps up and down unpredictably.
How it works:
When you log a fill-up, the tool calculates your true capacity by cross-analyzing pump volumes.
As you save logs, the Fuel Check module checks your historic bladder capacity baseline for the current weather to deliver a highly accurate safety-first Distance-to-Empty (DTE) diagnostic.
🔒 100% Private: I do not collect or transmit any of your logs or location metrics. Everything is saved strictly on your local device.
If this saves you from pushing your bladder tank to empty, feel free to buy me a coffee! Reach out using the feedback button below with suggestions.
