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What is considered high fuel consumption for a car?

2 Answers

DeIris

07/24/25 6:29am

The fuel consumption of a car depends on: 1. Engine: The fuel consumption index is an indicator of fuel economy, which determines whether a car has high fuel consumption. The level of the fuel consumption index also depends on the engine. 2. Transmission: The mainstream transmissions for family cars are dual-clutch transmission (DSG), manual transmission (MT), CVT transmission, and automatic transmission (AT). The lower the transmission speed, the lower the high-speed cruising speed, and the more fuel-efficient the car will be. 3. Total vehicle mass: Reducing the total mass of a car by one hundred kilograms can decrease fuel consumption by about 0.1L per 100 kilometers. 4. Ignition method: Except for new energy vehicles, choosing a diesel engine can save a lot of fuel compared to choosing a gasoline engine. This is because diesel engines have a relatively higher compression ratio, and fuel engines use lean mixture combustion, which eliminates losses in intake throttling, allowing higher thermal efficiency to be achieved with lower fuel consumption, resulting in significant fuel-saving effects.

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AnaAnn

08/11/25 2:12am

As a daily commuter car owner, I believe high fuel consumption mainly depends on personal experience and comparison. Every time I fill up the tank, I record the kilometers driven. If it used to run 500 km but now drops to 400 km, the fuel consumption has definitely increased. The manufacturer's reference data, such as around 8 liters per 100 km, if the actual measurement exceeds 10 liters, especially in stop-and-go city traffic without improvement, can be considered high. Using an app or simple calculation for fuel consumption is convenient: fuel amount divided by kilometers driven multiplied by 100. Driving habits like aggressive acceleration and frequent braking can skyrocket fuel consumption, which isn’t necessarily the car’s fault—adjusting driving style comes first. Low tire pressure or a dirty air filter can also waste fuel. By regularly checking these small details, I can keep fuel consumption within a normal range, avoiding wasted money and frustration.

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