엔진오일 교환 수리 사례

2026. 8. 13. 작업

난이도 & 준비물

증상

I have an Apollo brand 12 Volt Cooler/Warmer, designed to plug in to my car's 12 V cigarette lighter. I am wondering if the power this device uses will significantly affect my car's performance or gas mileage. I have a 2010 VW Jetta 2.5 liter gasoline car. The transformer for the 100-240 V AC connection (another option for running the device) says it is designed to output 4 A at 12 V DC. Since power = current x voltage , the transformer will output 48 W of power. The transformer also says that it takes 60 W of power for the input.

처리 내용

You should not notice any difference. Here's why: 1 hp = 746 W . This means that 60 W is 0.08 hp . The worst possible scenario from a load perspective is at idle. Assuming the engine is outputting a measly 5 hp at idle, the extra load would work out to 1.6 % of this value. The change in fuel consumption is barely sensible.