What Causes Increased Car Fuel Consumption?
2 Answers
Car fuel consumption increases due to the following reasons: 1. Issues with spark plugs or high-voltage wires: As the vehicle ages, abnormalities in the ignition circuit can lead to higher fuel consumption; 2. Poor fuel flow: Prolonged use can cause carbon buildup, obstructing the fuel system. Timely cleaning of the fuel injectors and throttle body is necessary to reduce fuel consumption; 3. Tire wear: The extent of tire wear also affects fuel efficiency. Severely worn tires may cause slipping, requiring the engine to output more power and thus increasing fuel consumption.
Having driven for over a decade, I've found that sudden increases in fuel consumption are most commonly caused by engine issues. For instance, worn-out spark plugs lead to weak ignition and incomplete combustion, burning more fuel. A clogged air filter reduces air intake, forcing the engine to work harder. Carbon buildup on fuel injectors affects the evenness of fuel atomization, lowering efficiency. Additionally, leaks in the fuel system, such as aging seals causing minor fuel leaks, or faulty oxygen sensors triggering excessive fuel injection, can also contribute. Don't underestimate these minor issues—they add up and can consume several extra liters of fuel. It's advisable to perform timely maintenance and replace worn parts to avoid significant financial losses.
