1. If you go to a car dealership for water pump replacement, it will be relatively expensive. Including labor costs, it would cost around 300-400 yuan.

 

2. Replacing a water pump at a dealership would cost around 500 yuan, and if you also replace the timing belt, it would be over 600 yuan. Water pump leakage can be caused by various factors, such as excessive axial movement of the bearing.

 

3. The price of a water pump for a Touran is around 400 yuan. Antifreeze is approximately 5 liters, which would cost around 150 yuan. Labor fees would be around 100 yuan. The overall cost for replacement would be around 650 yuan. It is important to promptly replace a damaged water pump to avoid high temperatures that can negatively affect the engine's lifespan.

 

4. Of course, the cheapest option would be to do it yourself, and it may cost less than 200 yuan. However, it is better to leave it to professionals, as improper handling can directly affect the circulation of the coolant.