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Does carrying five people versus one person in a car affect fuel consumption?

4 Answers
LaAdeline
08/26/25 4:56am
Carrying five people versus one person in a car does affect fuel consumption. Here is a detailed explanation of the relationship between car fuel consumption and vehicle weight: 1. Car fuel consumption is related to factors such as engine displacement, vehicle weight, and aerodynamic drag. 2. For the same car model, with the same number of passengers and cargo, different engine displacements result in different fuel consumption. It cannot be simply said that a larger displacement means higher fuel consumption. There is a close relationship between displacement and vehicle weight: lighter vehicles with smaller displacements are more fuel-efficient; heavier vehicles with smaller displacements may experience the "small horse pulling a big cart" effect, leading to difficulty in acceleration and increased fuel consumption. 3. For the same car model, with the same engine displacement, more passengers and cargo increase the overall vehicle weight. From the perspective of acceleration: the greater the weight, the more energy the engine needs to overcome the inertia of the original speed. From the perspective of constant speed driving: the weight has little effect on the energy required by the engine to maintain speed. Here, we need to ignore the change in the friction coefficient between the tires and the ground due to the change in tire contact area caused by weight. Of course, the greater the weight, the greater the inertia to maintain speed.
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OPhoebe
09/08/25 6:38am
To be honest, as a taxi driver with twenty years of experience, I often notice significantly increased fuel consumption when carrying five passengers. The reason is simple: with increased vehicle weight, the engine has to work harder, naturally consuming more fuel. It's like pushing a heavy load uphill—you need more strength. The difference isn't noticeable during slow city driving, but on highways, fuel consumption may rise by 0.5 to 1 liter per 100 kilometers. Don't underestimate this small change—it adds up over time, costing you more in fuel. I recommend regularly clearing trunk clutter and maintaining proper tire pressure. Winter heating also affects consumption, but weight is the main factor. Safety comes first—never overload to save fuel. Regular maintenance keeps your car in good condition.
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VonRafael
10/22/25 6:45am
Hey, when carpooling with friends for a trip, I noticed that squeezing five people into the car makes the fuel drop faster. The increased weight raises the engine load, requiring harder presses on the accelerator for starting and accelerating, which naturally increases gasoline consumption. The difference might be less noticeable for short city drives, but it becomes quite obvious on long highway trips, especially when gas prices are rising. To save money, it's best to plan your route to avoid traffic jams and maintain a steady speed; choosing a lightweight car model or an electric version can also help. Don't forget, using the AC in summer adds to the impact, but passenger load plays a significant role too.
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OliveLynn
12/05/25 7:08am
As an environmentally conscious commuter, I've observed fuel consumption changes: carrying five passengers increases weight, reduces engine efficiency, raises emissions, and typically increases fuel consumption by 2-4%. While the extra fuel burned per trip seems small, it accumulates over time, negatively impacting both the environment and your wallet. I recommend prioritizing public transport or carpooling to reduce empty trips; regularly checking weight distribution and tire conditions can slightly mitigate the impact, ensuring safe and efficient travel.
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