What are the effects of poor-quality fuel on a car?

2 Answers
McAiden
07/24/25 3:21am
Poor-quality gasoline can have the following effects on a car: 1. Carbon deposits: Low-quality gasoline can lead to increased carbon deposits in the combustion chamber. 2. Knocking: Poor-quality gasoline can cause knocking combustion, and sensitive cars may even produce slight noises. 3. Insufficient power: Low-quality gasoline can result in reduced power and increased temperature. Additional information: The quality of gasoline has a significant impact on a car. Gasoline is the heart of a car, and whether its quality meets the national standards for automotive gasoline greatly affects the vehicle. Poor-quality fuel can "poison" the car, with minor effects such as impacting acceleration and severe cases causing damage to the engine, requiring disassembly for repairs.
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MarianaLee
08/10/25 10:55pm
I used to always look for cheap gas stations to save a few bucks, but ended up filling up with low-quality fuel that immediately caused problems. The engine noise became louder, the car would jerk when accelerating like it was coughing, and there was no power at all. After that incident, fuel consumption surged by at least 20%, and the car felt sluggish after just a short drive. The mechanic found severely clogged fuel injectors, costing over 600 yuan to clean. Worse yet, carbon buildup inside the engine would shorten its lifespan and could damage the catalytic converter. Since then, I only use quality fuel from reputable stations—bad fuel can take years off your car’s life, and repair costs far outweigh any savings. Lesson learned: penny-wise, pound-foolish. Now I check my engine’s condition every week.
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