How many kilometers can you drive when the range shows 0?
2 Answers
When the range shows 0, you can still drive approximately 20 kilometers. The purpose of displaying a range of 0 is to alert the driver to refuel the vehicle promptly, preventing the situation where the car cannot start or run due to lack of fuel. When refueling, it is important to choose the appropriate gasoline grade based on the engine's compression ratio. The gasoline grade represents the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. Higher gasoline grades indicate stronger anti-knock performance. Standard gasoline is composed of isooctane and n-heptane. Isooctane has excellent anti-knock properties, while n-heptane has very poor anti-knock performance. Therefore, in standard gasoline, isooctane has an octane rating of 100, and n-heptane has an octane rating of 0.
After driving for so many years, I've seen many people pushing their luck when the range shows zero, which really isn't advisable. Cars are designed with a small buffer—gasoline vehicles might go 5-15 km, and electric vehicles around 3-10 km—but don't rely on it. Road conditions and load can affect the actual distance, and you might end up stalling. I've made it a habit to refuel or recharge when the range drops to a quarter, and I regularly maintain the dashboard to ensure calibration accuracy and avoid false readings. Safety is paramount; breaking down on the highway is a significant risk. I recommend using an app to track fuel levels, familiarizing yourself with nearby gas stations, and staying alert for peace of mind. In short, when you see zero, pull over and seek help.
