It varies depending on engine type.
A general rule would be 40k miles for petrol, and 80k for diesel.
It depends on the year.
standard mileage for most all timing belts is 70,000 miles, but not many Jeeps have belts, they have chains that do not need to be replaced
CR-V engines are equipped wiht timing BELTS not chains. The factory recommended replacement interval is 105,000 miles.
Unless a timing chain is making a noise or has jumped a tooth, they need not be replaced. Timing belts need changing according to the specs spelled out in the owner's manual.
Every 80,000 kms
I was looking at the 1999 Ford Escort scheduled maintenance guide and the Gates website ( they make timing belts etc . ) and both show to inspect the timing belt at 120,000 miles , replace if necessary ( that applies to both the 2.0 liter SOHC and DOHC engines )
The Gates website ( they make timing belts etc. ) shows 100,000 miles for normal service and 75,000 miles for severe service
Timing chains never need to be changed, only belts.
There is no recommended replacement interval given for the chain replacement timing belts are critical, chains are not.
A timing belt is often a toothed belt, but there are other places where toothed belts can be used as well.
Most reccomendations are between 60,000 and 100,000 miles
if you are talking about the beetle bug there is no timing belt. the cam is run off the crank gear to the cam gear.