A failing timing belt is one of the most critical maintenance issues car owners face, yet many drivers overlook this component until it's too late. Most manufacturers recommend replacement between 60,000 and 100,000 miles, but climate, driving conditions, and engine type all influence the actual service interval.
Warning signs include a ticking noise from the engine bay, difficulty starting the vehicle, visible cracks or fraying on the belt during inspection, and misfiring cylinders. If your engine is an interference design, a broken timing belt can cause catastrophic internal damage costing thousands to repair.
Replacement typically costs between $500 and $1,200 at a shop, a worthwhile investment compared to the $3,000 to $5,000 bill for engine damage from a snapped belt.
