Does cranking up my big sound system in my car affect my MPGs?

Question

I mean, the alternator is running at all times weather I use lots of power or not, right? Ive heard that turning the a/c gets you less mpgs, but what about cranking up my system??

Answer 1

the ac is driven by a pump---when its off ,the pully free spins, when its on, the engine has to work to spin it,,you are good to go on the cranking it up.

Answer 2

i think a little, but your battery would be affected th emost

Answer 3

Cranking it up, no.

Having that big sound system? Yes, it does. All that weight reduces your MPG.