I was hearing a slight rattling kind of noise intermittently for a couple months, but now almost always when idling. No error messages, no performance issues.
The mechanic said my timing gear and chain were wearing out, and that it would be a $5k job, which doesn't make sense for this car, even though it's in great shape otherwise. Mileage is 92k.
How long can I drive it? My work commute is 4 miles.