Listening to music while driving will not waste gas or increase fuel consumption. Because this time is different from parking and listening to music. Instead of using battery power, the generator outputs rectified DC power. As long as the vehicle engine is working, the generator is working, so the very small power will not increase fuel consumption. And compared with the power consumption of other devices in the car, the power consumption of listening to music is negligible.

Extended information:

Personal vehicle fuel consumption control methods

First of all, you should maintain a reasonable driving speed. All cars have an economic speed. When driving at this speed, fuel consumption is the lowest, so try to stay at the economic speed. When driving, try to control the valve at about 80%, and the engine is controlled to work at 80% load, but it must be flexibly controlled according to different driving conditions. Driving at economical speeds, a car saves 20%-25% more fuel than driving at high speeds, and about 5% more fuel than driving at low speeds. When driving, you should try to avoid sudden acceleration or deceleration. This is because sudden acceleration consumes one-third more gasoline than steady acceleration, so keep the vehicle speed steady.

When starting a cold car, pay attention to preheating the engine. When the temperature rises to 30-40 degrees, start the engine. After starting, step on the accelerator lightly and increase gears in sequence. When the car is driving, the engine temperature is controlled at 85%-95%. Normal driving temperature is also one of the necessary conditions for fuel saving. Temperatures that are too high or too low will lead to increased fuel consumption.

Reducing unnecessary idling when driving. When the engine is idling, due to the low speed, the mixture formation conditions are poor and the concentration is too high, which will increase fuel consumption. Therefore, the car should be turned off when it needs to be parked for a long time. Keeping the interior of the car tidy can effectively reduce the weight of the car. Unnecessary items in the car should be removed as much as possible, and debris from the chassis should be cleared in a timely manner. Try not to place items on the roof of the car to avoid increasing wind resistance and fuel consumption.

Reference: Baidu Encyclopedia_Fuel Consumption Control