About 40-50 km. When the oil gauge light is on, there are 5-10 liters of oil in the vehicle. According to the displacement and fuel tank size, each vehicle model is slightly different, which will be marked in the instructions of each vehicle. Knowing the remaining fuel, we can roughly calculate how many kilometers we can run. According to the driving conditions and driving skills, there will also be a big difference. Judging from experience, no matter what car, reduce the braking after the fuel gauge light is on. Don't drive at low speed. The braking itself doesn't use fuel, but it will use fuel if you increase the speed after the speed goes down.