Quote:
In my G1 I have a 640w amp and a sub on top of an aftermarket head unit, and generally speaking it disappears into background noise (lol) and I can still hit 90-100mpg blasting the radio.
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What he said.
In my old Insight Turtle I not only had the radio cranked, I also had the rear camera hooked up through the DVD player running all the time and I still averaged over 70 mpg in it. I also averaged way over 70 mpg in Ron Burgundy with the radio blasting and the AC on most days.
In my Volt I always have the radio and AC on (ECO mode), and never notice much of a drop. I don't think the radio draws enough to worry about unless you have a really weak battery or alternator