The extent of the damage will depend on the engine speed at the time the belt breaks. If the engine is idling, the damage may be limited to bent valves. However, if the engine is running at high speed, the damage could be more severe, including broken pistons, connecting rods, and camshafts.
In addition to the damage to the engine itself, a broken timing belt can also cause damage to the water pump, oil pump, and alternator. These components are all driven by the timing belt, and if the belt breaks, they will stop working. This can lead to overheating, loss of oil pressure, and electrical failure.
Therefore, it is important to replace the timing belt on your Citroen Saxo 1.1 engine according to the manufacturer's recommendations. This will help to prevent engine damage and ensure that your car continues to run smoothly.