|Extra fuel use
Question : DOES installing extra electric components such as a fog lamp consume
more fuel ? I'm driving a Nissan Sentra
Sport 1.6 (M).
Nothing is for free! Any accessory or
electrical component requires energy and
this energy must come from somewhere,
whether it is from the battery or directly
from the alternator.
In either case, the alternator needs to run the component or charge up
the battery. This incurs drag on the engine and
Similarly, the air-conditioning compressor pulls power from the engine to compress the gas and that consumes fuel.