For a 2013 Toyota Camry, the warranty and maintenance guide recommends that the timing belt be changed every 90,000 miles or 72 months. Whichever milestone occurs first is when the car's owner should get the timing belt changed. The recommendations vary based on the car's production year, make and model.
A timing belt allows an engine to run; breakage strands the driver, which is the one of the reasons mechanics recommend getting it replaced before it breaks. If a car has an interference engine, a broken timing belt can damage the engine's pistons.
On average, the cost to replace the timing belt is between $340 and $457. Some owners choose to replace the water pump, front engine seals, drive belt, idlers and tensioners when the timing belt is replaced.