<p>68,000 miles seems kinda early for a water pump to go. It wouldn’t be good if car was driven overheated and cylinder head got warped or something. If car has timing belt and it hasn’t been replaced yet, it should be changed before too long…will cost maybe $800-1000 for the job. Some cars have timing chains instead of rubber timing belts…I’d rather have car with chain that doesn’t require timing belt replacement every 60-80,000 miles. If belt breaks, it can destroy engine. If you’re buying from dealer ‘certified preowned’…that’s good. would still be best to ask for service history and getting car examined by mechanic first before buying. Good luck!</p>