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Why does the 1.5L Buick Excelle have high fuel consumption?

2 Answers

LaPhoebe

07/28/25 5:10pm

Here are the reasons for the high fuel consumption of the 1.5L Buick Excelle: 1. Poor fuel flow: Excessive carbon deposits cause fuel line blockages, leading to high fuel consumption. 2. Brake abnormalities: Brake pads not retracting properly, causing the vehicle to drive in a constant braking state. 3. Spark plug failure: Generally, spark plugs need replacement after 20,000 to 30,000 kilometers of driving. If you feel the vehicle's fuel consumption is too high, check if the spark plugs are igniting abnormally. 4. Dirty air filter: Vehicle maintenance requires timely replacement of the air filter, otherwise it may cause poor air intake and lead to increased fuel consumption.

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McBriella

08/11/25 11:36pm

My 1.5L Excelle has been running for eight years, and I've found that fuel consumption largely depends on driving habits. During morning and evening rush hours when stuck in traffic, the RPM often lingers below 2,000. This low-RPM, high-load condition is the most fuel-intensive, easily pushing consumption over 10L per 100km. Last inspection revealed all four tires had a pressure of just 2.1 bar—low pressure increased rolling resistance, but after inflating to 2.4 bar, fuel consumption immediately dropped by half a liter. The air filter box was caked with dust like a carpet, and the unchanged air filter for six months restricted airflow, forcing the engine to compensate by guzzling more fuel. The spark plug electrodes were severely eroded, causing delayed ignition and wasted fuel spray. The trunk was perpetually loaded with two cases of mineral water, a folding bike, and a toolbox, adding 80kg to the car’s weight—extra load naturally hikes fuel use. Now, I stick to three practices: monthly tire pressure checks, throttle body cleaning every 5,000km, and spark plug replacement every 20,000km. Fuel consumption has stabilized around 8.5L/100km.

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