A comparative analysis of the measurement tools of fuel consumption in a passenger car

The article presents the results of practical application of the author's application for a mobile device that allows measuring fuel consumption in a passenger car. The application has two modules and works while driving the car. One of the modules retrieves data from the on-board computer using the OBD II protocol. The other module uses the phone's GPS and data entered by the user. Simultaneous data collecting from the modules allows them to be compared. Based on the results, it is concluded that the inaccuracy of GPS navigation in relation to OBD II for gasoline cars does not exceed 6%, and for those with diesel engines, 21%. The results of the work will make it easier for users to appropriately select a technique for testing the fuel consumption of a passenger car.