It doesn't have a timing belt...it has a metal timing chain...these do not standardly wear out for a very long time.
The engine does not have a timing belt. If you are referring to the serpentine belt (the long belt that runs around the pulleys), it should be replaced when it shows sign of age. I replaced mine at 65k miles and it looked new. I hear people replace them anywhere from 80k - 90k miles. once
Timing chain usually needs to be replaced each 180-200K miles.
What you meant to ask is how often should the timing belt be replaced! And the answer is every 90,000 miles for b2000 model.Ok
Every 90K miles.
It should not need to be replaced under normal conditions.
Most Mercedes Benz Techs will suggest replacing your battery every 7 years.
You should never have to replace it. The timing chain is designed to last the life of the engine. It is normally replaced when the engine is overhaul.
Mercedes c200 cdi hasn't got timing belt. Has got chain.
The Prizm has a timing CHAIN, not belt. The timing chain does not get replaced on a scheduled interval. It should never need to be replaced. The serpentine belt, however, does need to be replaced. Inspect the belt for cracks and glazing, and replace. It is not a difficult DIY job. It is easiest to do it from under the car, after removing the splash pan.
Only the 4 cylinders have a belt. The belt should be replaced at 60,000 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.
Timing chains are designed to last the life of the engine. They are normally replaced during a complete engine overhaul. Unless the chain becomes noisy no maintenance is required.