Listening to music in the car wastes gas. Because after the car is turned off, the car's engine does not drive the generator to charge the battery, so the battery is always in a discharged state. If the car owner is still listening to music in the car, the battery will lose power. Reasons for oil costs: Because different cars have different audio volume, audio power, and remaining battery power after they are turned off, the time that car owners can listen to music on the car audio is also different. In addition, other electrical equipment in the car is also draining the battery. It is not recommended that car owners listen to music after turning off the engine. Note: When the power in the battery is exhausted, car owners will not be able to start the car normally through the ignition, and when the battery is deeply discharged, it will have a negative impact on the life of the battery. It is also not recommended that car owners idle to listen to music, because idling for a long time will not only increase fuel consumption, but also increase engine carbon deposits.