This tip could save you thousands of dollars.
My very first tip some months ago was to find a shop you can trust and take their advice. If your shop recommends replacing the timing belt by all means do it as this can save you a lot of money, time and inconvenience.
Standard automobile engines have valves to control the flow of air into the engine and exhaust gases out of the engine. With some engines, called interference engines, when open the valves occupy the same space the pistons do at a different time when at the top of their travel in the cylinders. The valves are opened and closed by means of a cam that rotates in time with the pistons so that air can be sucked into the cylinders, compressed, burned, and finally pushed out of the cylinders. The cam is rotated by one of three ways, a timing chain, a set of timing gears, or a timing belt. The chain and the gear set are both robust and seldom completely fail. However the timing belt is a fabric and rubber affair that has a definite life of about 80 to 120 thousand miles. Failure of the belt is catastrophic and complete, leaving the valves in whatever position they happen to be in at the time. Remember I said in interference engines both the valves and the piston occupy the same space only at different times. If the timing belt fails, as the engine decelerates to a stop they try to occupy the same space at the same time so the valves and the pistons interfere and are destroyed leaving the engine inoperable and in need of extensive repair. Many times the complete car is junked due to this unfortunate event. I have known of it happening to people several miles from home on a trip requiring them to purchase a new car with no bargaining power. Expensive!
Manufactures warn you of this with instructions in the owner’s manual to replace the belt at a recommended mileage and reputable repair shops will recommend the belt be replaced if they see that it is due. However this is a recommendation that is often not acted upon as the cost of replacement is somewhat high and there may be a suspicion that the shop is just trying to upsell. Find a shop you can trust and take their advice.