What are the reasons for the high fuel consumption of Mazda 6?

2 Answers
RosalieAnn
08/29/25 2:30am
The reasons for the high fuel consumption of Mazda 6 include low-quality fuel, severe engine carbon deposits, and excessive vehicle weight. Here are the detailed explanations and solutions: Low-quality fuel: When the fuel added to the car is of low quality, the fuel and mixed gas cannot burn fully in the engine, leading to partial fuel wastage and consequently increased fuel consumption. This situation can be mitigated to some extent by using higher-quality fuel. Severe engine carbon deposits: When the engine carbon deposits are too severe, the fuel cannot be transported normally, resulting in increased fuel consumption and weakened power. In this case, it is necessary to clean the engine carbon deposits promptly. Excessive vehicle weight: When the vehicle weight is too high, it increases the burden on the engine, leading to higher fuel consumption. To address this, the vehicle weight should be reduced.
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VanBeckett
09/10/25 7:16am
After driving my Mazda 6 for several years, the fuel consumption suddenly skyrocketed, which made me quite nervous. Later, I had it checked by a mechanic and discovered several common issues: first, there was too much carbon buildup in the engine, leading to incomplete combustion and increased fuel consumption; aging spark plugs were also a key factor, and replacing them saved a lot. Driving habits also have a big impact—I used to accelerate and brake sharply in the city, which caused the fuel consumption to rise sharply. Now, I’ve learned to accelerate smoothly, and it’s much better. Insufficient tire pressure increases rolling resistance, forcing the engine to work harder; dirty engine oil reduces lubrication, making the engine struggle and consume more fuel. Regular maintenance on these small details, such as replacing the air filter and maintaining proper tire pressure, can effectively control fuel consumption. I recommend paying attention to these things regularly.
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