The cost of fixing a coolant leak can vary depending on the extent of the damage and how quickly you want it fixed. On average, you can expect to pay $100 - $200 to have a coolant leak fixed. However, the cost of fixing a coolant leak is more than just the cost of the repair.
It depends on what kind of engine you have. If you have a foreign car, it’ll cost you less than $100. If you have a domestic car, it’ll cost you more than $100. A lot of domestic cars will need a whole new radiator, which will cost you $300-$500.