We have a 97 SC1 with over 100 miles on it and have had it for almost 5 years now. So far nothing has had to be changed on it. I have a 05 Gran Caravan that had to have the EGR and water pump replaced at about 50000 miles. Friend of ours had the same thing at about the same time with theirs also. The dealership said that it wasn't unusual for the water pump to be replaced then.