The Hybrid Synergy Drive Companion was built to solve the #1 issue with the 2nd Gen Prius: guessing how much fuel you actually have left.

Because of the notorious "fuel bladder," your gauge can be unpredictable. To use this tool, simply enter your trip distance, your dash consumption (L/100km or MPG), and the amount you just pumped.

The system analyzes the date, your geographic location, and temperature to learn how your car's tank behaves in different seasons, providing a high-precision range estimate unique to your vehicle.

🔒 Privacy: All diagnostics stay strictly on your device. No personal data is ever collected or transmitted.