What Causes Increased Car Fuel Consumption?

1 Answers
TravisRose
07/30/25 7:14am
Reasons for sudden increase in fuel consumption are as follows: Engine Carbon Deposits: During long-term operation of the vehicle, carbon deposits and sludge inevitably form as gasoline burns. If these deposits and sludge are not cleaned in time, they will lead to increased car fuel consumption. Therefore, timely cleaning of engine carbon deposits is very important. Spark Plug Failure: The function of car spark plugs is to ignite the air-fuel mixture with the electric spark generated by high voltage. If damaged, the ignition energy decreases, causing uneven combustion of the mixture, which results in slower acceleration and increased fuel consumption. At this point, it is necessary to promptly inspect and replace the spark plugs. Abnormal Tire Pressure: Abnormal tire pressure can also affect the car's fuel consumption. When the tire pressure is too low or the tread is severely worn, the contact area between the tire and the road surface increases, leading to greater friction, higher rolling resistance, and naturally higher fuel consumption. Of course, conversely, excessively high tire pressure can have some fuel-saving effects, but this will reduce ride comfort due to poor shock absorption and also pose a risk of tire blowouts.
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