The 2004 and later Prius models do not have a timing belt, so the answer for them is "never". They use a chain, which should only be replaced when major engine work is done or if it breaks, which could be 150K miles or more. I'm not sure if the pre-2004 model has a belt or not, but if they do the change interval will be in your owner's manual.
Toyota recommends replacing the belt every 100,000 miles.
03 camry 4 cylider has a timing chain a 03 v6 camry hmilesas a belt and you change it every 90,000
If the engine has a timing belt, it should be changed around the 150K mark. If there is a timing chain, it does not have to be changed unless it is damaged.
I think they recommend to change it each 160-180K miles.
Should be changed every 60,000 miles. This is NOT an interference engine.
It should last the life of the engine and is normally replaced during an engine overhaul.
timing belt. yep, he is right
You must replace the belt every 90,000 miles. Warning:This is an interference engine.
You should change the timing belt every 50,000 miles. Most cars made in the last decade have a timing chain instead of a belt, and those last much longer.
Toyota recommends every 90K.
Every 90K miles.
It would be best to change the timing belt at or before 100k miles.