How many miles can you put on a Toyota?

No rust yet & its never been low on oil. Its lived most of its life in a garage in the mid Atlantic region. We’ve had the oil changed every 3000-4000 miles & all scheduled maintenance. Its really been almost no trouble at all for 13 years & that makes me reluctant to part with it. And we do enjoy not making car payments, but don’t want to sink too much money into it if everything is about to fall apart. Sounds like we will be spending money either way but if the engine can get another 100,000 miles I think its worth fixing.