When you turn the AC on, turn the speakers louder or turn on a subwoofer in a car, does fuel economy decrease in order to create more power?

Question

When you turn the AC on, turn the speakers louder or turn on a subwoofer in a car, does fuel economy decrease in order to create more power?

In: Engineering

Answer 1

Your engine ultimately powers everything in your car. So in a sense, yes. When electronics in your car pull more power, it has to come from somewhere, and your engine can only output so much power. However, unless you are running a lot of stuff over a long period of time, you really won’t notice much of a difference.