How Far Can You Drive When the Fuel Tank is Empty?

[KennedyMarie]

When the fuel tank is empty, you can still drive for more than 20 kilometers. Here are some precautions to take when refueling your car: 1. Choose a reputable gas station: Using substandard gasoline can indeed damage your car. It is recommended to opt for large, well-established gas stations when refueling. 2. Try to refuel during early morning or evening hours: Avoid refueling during midday when the sun is intense and temperatures are high. Gasoline is sold by volume rather than by weight, and volume is affected by temperature, expanding when hot and contracting when cold. Refueling in the morning or evening ensures that the same volume of gasoline has a higher mass, which can lead to significant savings over time.

[Karl]

I've driven a taxi for twenty years and seen empty fuel tanks countless times. When the fuel gauge lights up red, there's usually about 5-6 liters left in the tank, enough for a regular sedan to run 40 to 80 kilometers. Once I carried a passenger on the highway and managed to go 70 kilometers after the light came on before finding a gas station, but the wheels were already feeling floaty. Remember, uphill roads and using air conditioning can double fuel consumption, and the impurities at the bottom of the tank might get sucked into the engine. I always refuel when there's a quarter tank left—after all, the cost of calling for roadside rescue is enough to fill up two full tanks, not to mention the business it delays.

[OliveAnn]

Just experienced this heart-stopping moment last week! I was driving my bestie on a countryside trip when the fuel light came on, and the navigation showed the nearest gas station was 38 km away. I didn't dare turn on the AC the whole way, even turned off the music, and finally made it there trembling, with the remaining range showing just 5 km. Actually, the difference between car models is huge—my bestie's SUV had 10 liters left when the light came on, while my hatchback only had 4 liters. Now I've set a reminder on my phone: a pop-up when fuel drops below 25%. A special reminder for friends driving plug-in hybrids: when the engine suddenly runs out of fuel and switches to pure electric mode, you'll notice a clear lag in acceleration.

[RyderMarie]

From a technical perspective, when the fuel gauge warning light comes on, the fuel pump has already been exposed above the fuel surface, and it can still operate for a while relying on the remaining fuel for cooling. Most family cars at this point have 5-10 liters of fuel left in the tank. Based on a fuel consumption of 8L per 100 kilometers, theoretically, they can drive 60-120 kilometers. However, in reality, a 20% increase or decrease in road gradient can cause fuel consumption fluctuations exceeding 30%. Not to mention that older vehicles may have sediment in the fuel system, which can easily clog the fuel injectors at low fuel levels. It is recommended to carry fuel additives for emergencies. When completely out of fuel, never pour mineral water into the fuel tank in an attempt to dilute the gasoline.