Even with low mileage, a timing belt should be replaced if it's over 10 years old. Rubber deteriorates with age, regardless of mileage, and an old belt can snap unexpectedly. Most manufacturers recommend changing the timing belt based on time or mileage, whichever comes first.
If your car is over 10 years old but has less than 50,000 miles, it’s still a good idea to replace the belt to avoid costly engine damage. Checking for cracks, fraying, or brittleness can also help determine if it needs immediate replacement.
