Don't Wait Until the Fuel Light Comes On! CPC Reveals the 'Golden Time to Refuel': Beware of Saving Small on Gas but Paying Big on Repairs

Do you wait until your car or motorcycle's fuel warning light turns on before thinking about refueling? Many drivers choose to delay refueling, assuming they can keep driving for a while longer. However, consistently operating with low fuel levels can place extra strain on the fuel pump and increase the likelihood of fuel system problems. CPC warns that drivers should avoid the habit of waiting until the fuel light comes on. The amount of remaining fuel and storage conditions also matter. Refueling at the right time helps prevent higher repair costs later—just to save a few minutes now.

Many vehicle owners believe that as long as the fuel light hasn't come on, they can keep driving, and some even wait until the warning appears before seeking a gas station. However, CPC points out that the fuel pump relies on fuel for cooling during operation. When a vehicle runs for extended periods with very low fuel, the pump may not receive adequate cooling, increasing the risk of overheating and wear over time.

Beyond pump issues, sediment and impurities can accumulate at the bottom of the fuel tank over time. When fuel levels are low, these particles are more likely to be drawn into the fuel system, potentially causing clogs, fuel delivery problems, and even engine performance issues. If such failures occur, the resulting repair costs could far exceed the price of refueling earlier.

CPC also highlights that Taiwan's humid climate increases risks when fuel tanks are kept low. With more air space inside the tank, temperature fluctuations can lead to condensation, raising the chances of internal rust and fuel contamination. Therefore, instead of waiting until the tank is nearly empty, it's better to refuel when fuel levels are still at a reasonable level. CPC recommends treating one-quarter tank as a reminder point—once reached, drivers should plan to refuel promptly to avoid prolonged low-fuel operation.

As for how far a vehicle can go after the fuel light turns on, there's no universal answer. While most vehicles retain a reserve when the light activates—often allowing another 50 to 60 kilometers—the actual distance depends on vehicle type, tank size, average fuel consumption, road conditions, and driving habits. Thus, the safest approach upon seeing the warning light is to find a gas station as soon as possible, rather than treating the remaining range as a 'safe buffer' to delay refueling indefinitely.

Source: CPC

Editor: Li Yi-Qing