BearOil App is China first independent mobile application aimed at collecting actual voluntary fuel consumption data across China and among various vehicle model drivers and publicizes its results to inform decision-making at the consumer, manufacturer, and policymaking levels. To date, over 400,000 drivers have downloaded the App since 2010 in 375 cities and representing 13,457 vehicle models.

This report attempts to flash out actual and certified FC gaps in China based on official FC certified data available and voluntary actual FC data collected from drivers across China through BearOil App and to suggest and assess reasons for causing the gap (e.g. by model and by location).