In the settings of your phone (under "battery"), you can check the consumption of the application since the last full charge of the battery.
Consumption is relative to other mobile applications installed on your mobile phone. Therefore, if you have only used one app in the last 24 hours, its consumption will be very high. If you keep an app in the foreground for a long time, it will significantly increase its consumption.
In general, if the application remains in the background and you drive less than one hour a day, the consumption should remain below 3%.