you did not mention the kind of car. Most generally the chain should not have to be changed until it is noisy or giving a problem.
The 3.8 liter V6 engine has a timing CHAIN
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.
On a 2008 Chevrolet Cobalt : The 2.2 liter ( and 2.4 liter ) four cylinder engines have a ( timing CHAIN )
it does not have a timing belt, it is a chain drive which should be good for the life of the car
NO, That should last the life of the engine.
You should have a timing chain not a belt on that 3.0 liter motor. They last 300k or more and rarely ever have to be changed
The 4.7 liter has a timing belt and the 5.7 liter has a timing chain
It must be a timing CHAIN because the Gates website does not list a timing belt for the 4.8 liter V8 engine in a 2007 BMW 650I
The 2008 Kia Optima 4 cylinder equipped with a timing chain will normally last the life of the engine and is changed when the engine is rebuilt. The 2.7 Liter V6 is equipped with a timing belt which MUST be changed every 60,000 miles. Warning the V6 is an interference engine.
Yes, it uses an internal timing "CHAIN", not a belt. The timing chain should last until the engine needs to be rebuilt.
Timing Chain
It has a timing chain