Well that's probably something you should ask the mechanic... hard for us here to pin down the issue. Generally speaking coolant parts aren't that pricey though, rubber hoses range from 20-40. But you're looking at labor and refilling coolant as well. But if it emitted white smoke, you may have blown the head gasket. In that case you probably don't want to estimate the price, it's going to be quite a bit.While I was driving today my car emitted white smoke and smelt like maple syrup, I drove it to the mechanic, and all the coolant was leaked out out the tank and some rubber has melted. My question is how much could I be looking at for repair costs?