The fuel gauge in the car starts to light up: How many kilometers can I still manage “in reserve”? As a rule of thumb, there is usually around 50 kilometers left when the display lights up. As a driver you should not drive to a gas station at the last second - and not just because there is a risk of damage to the vehicle.
Anyone left with an empty tank will face a fine, for example, 70 euros to bogge the motorway.