Fuel tank system and vehicle

The invention belongs to the technical field of vehicles, and discloses an oil tank system and a vehicle, the oil tank system comprises at least two oil tanks, a first communicating pipe, a second communicating pipe and a third communicating pipe, fuel oil is contained in the oil tanks, at least one oil tank is provided with a filling hole, the fuel oil in the oil tanks is communicated through the first communicating pipe, and the oil tanks are communicated through the second communicating pipe; the communicating position of the second communicating pipe and the oil tank is higher than the liquid level of fuel oil, the first communicating pipe communicates with the second communicating pipe through the third communicating pipe, the single-side oil injection effect is achieved through the oil tank system, and the fuel oil in the second communicating pipe can flow back into the oil tank through the third communicating pipe and the first communicating pipe in sequence. 本发明属于车辆技术领域，公开了油箱系统和车辆，该油箱系统包括至少两个油箱、第一连通管、