Why Does Using Car Air Conditioning Increase Fuel Consumption?

1 Answers
DeTimothy
07/30/25 3:09am
High fuel consumption when using car air conditioning is due to aging of the air conditioning system or the car engine. Below are the specific reasons for increased fuel consumption: 1. Impact of temperature: Causes fluctuations in fuel consumption; in winter, lower temperatures lead to slightly higher fuel consumption. 2. Prolonged lack of vehicle maintenance: Dirty engine oil and air filters can also increase fuel consumption. Dirty oil leads to poor lubrication, increasing resistance in the engine's moving parts, which requires more energy to overcome, thus raising fuel consumption. 3. Excessive carbon buildup in the vehicle: Carbon deposits commonly accumulate in the throttle body, fuel injectors, intake ducts, and piston tops. Excessive carbon buildup in any of these areas can result in incomplete combustion, leading to increased fuel consumption.
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