
When the fuel gauge shows 0 km, you can still drive approximately 20 km. Here are the relevant details: Introduction to the fuel gauge showing 0 km: When the fuel gauge displays 0 km, the fuel warning light comes on. This is merely a reminder to refuel, as there is still some fuel left in the tank. Generally, most household cars can travel at least another 20 km. However, the exact distance you can drive depends on the specific model, as each car's fuel tank size, fuel consumption, and settings vary. In urban areas, this should be enough to reach the nearest gas station. Emergency handling methods: If the fuel warning light turns red, although the car can still continue to drive, it is advisable to refuel as soon as possible. When the fuel gauge shows a quarter of the tank remaining, it's time to refuel. If the fuel warning light turns red and you cannot refuel immediately, drive on the right side of the highway at a steady speed and head to the nearest gas station for refueling.

I experienced this situation just the other day—drove nervously for about ten kilometers after the fuel gauge hit zero to find a gas station. Most cars can still run at least 15-30 kilometers after the fuel gauge shows empty, depending on your car model, fuel tank design, and current driving conditions. That time, I had the AC on in heavy city traffic and clearly felt the reserve fuel depleting rapidly. My advice is to head straight to a gas station when the fuel light comes on—don’t push it like I did. Running out in a long tunnel or on the highway could be dangerous. Now, I’ve made it a habit to refuel when the tank is down to a quarter.

From a vehicle engineering perspective, when the fuel gauge hits zero, there is typically a reserve of about 5-10 liters left. Assuming an average fuel consumption of 8 liters per 100 km for a regular car, the theoretical maximum range would be 60-120 km? But take this number with a grain of salt. In reality, the shape of the fuel tank can cause inaccuracies in fuel level monitoring, and the fuel pump may fail to draw fuel when going uphill. Among the cars I've repaired, there was an owner who forced the car to run 32 km before the engine completely stalled—the towing cost ended up being three times more expensive than the fuel would have been. The safest approach is to refuel within 50 km after the low fuel warning light comes on, while also turning off the AC to reduce load.

Last week, my sister kept driving even when the fuel gauge was on empty, and her car broke down just 500 meters before the highway exit. The traffic police who came to help push the car mentioned they handle dozens of such cases every month. In reality, driving about 20 kilometers after the fuel light comes on is generally the safe limit, as the fuel pump starts drawing impurities from the bottom of the tank by then. Don’t believe rumors about being able to drive 50 kilometers—fuel tank sensors also have a margin of error. To be safe, you should refuel as soon as the gauge hits the red line, rather than risking a breakdown.


