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2026. 6. 30. 작업
Does increased load of electronic devices from your car reduce fuel economy?
The alternator's drag on the engine varies with the electrical load on the alternator. So, yes, as you increase the electrical load, the alternator consumes more power from the engine, and the fuel economy drops. Except for the cooler, your hypothetical load is pretty small, so you might not notice the loss of fuel economy, but it will be there. You'll also loose fuel economy if you open the windows at speed, let your tire pressure drop, carry around excess stuff in the car, turn on your lights in the rain, etc.
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