I have had my alternator replaced 3 times from leaky oil gasket. 1st time covered under 100,000 mile warranty, 2nd time covered by extended warranty only 6 months later, 3rd time under recall and now less than 60 days later needing to be replaced again. 2nd time it happened I was driving 45 miles per hour on a busy road when the car turned off on us, 3 children in the back seat. Luckily people swerved around us and we weren't involved in an accident. So far Hyundai has not done anything to rectify this except "fixing" the problem, which isn't fixing anything!