One problem related to vehicle overheat has been reported for the 2000 Subaru Outback. The most recently reported issues are listed below.
Problem started when driving to minnesota from California. Lower thermostat went out and car over heated, replaced. Lower thermostat went out again. Car still heating up funny, dealer says nothing wrong. Turns out head gasket gone. Next the engine was found to have a crack, they put in new block and gave us an extended warranty. Now less then a year later car overheats again. Subaru seems to be doing nothing to help.