How to Know How Much Fuel is Left in the Tank?
2 Answers
Nowadays, the method to check a car's fuel tank capacity is generally by observing the readings on the fuel gauge inside the vehicle. The fuel gauge on the dashboard usually has 5-6 segments, with each segment representing the remaining fuel capacity in the tank. It is generally recommended to refuel when the fuel gauge shows only two segments left to avoid running out of gas midway. Hazards of low fuel levels: 1. Prone to stalling and shaking: Normally, the fuel level indicator serves as a reminder for the owner to refuel promptly. When the fuel level reaches the "warning" line, even if there are no issues with the fuel, it can be affected by road bumps, turns, and other driving conditions, causing fluctuations. It is advised to refuel when the gauge is one segment above the lowest mark (before the warning light comes on) or when it is close to that point. 2. Fuel pump overheating: Due to the characteristics of certain car models, the fuel pump relies on the fuel for cooling. If the fuel level reaches the lowest mark, the fuel pump may be exposed above the fuel surface, leading to inadequate cooling, accelerated or premature internal wear, short circuits due to overheating, or even burning out. 3. Unsafe driving: Extremely low fuel levels can make it extremely dangerous to control the steering and braking systems in the event of sudden stalling. For the safety of both the driver and others, it is crucial not to wait until the fuel warning light comes on or remains on for an extended period before refueling.
When driving and wanting to know how much fuel is left in the tank, the key component to check is the fuel gauge on the dashboard. The fuel gauge operates via a sensor: there's a float inside the tank that moves up and down with fuel level changes, altering the resistance value, which causes the needle or digital display to shift position. When the tank is full, the needle points to the highest mark; at half-tank, it rests in the middle; and when nearly empty, it drops to the low point. If the sensor ages, readings may become inaccurate—for instance, showing half a tank when there's actually less. I’ve also noticed that when the low-fuel warning light comes on, it indicates only 5-10 liters remain, meaning you must refuel immediately. Sensors should be checked regularly to prevent malfunctions; otherwise, breaking down mid-journey would be troublesome. Making a habit of glancing at the fuel gauge before driving is wise, especially before long highway trips—don’t skip it.
