Is it worth replacing Cambelt on an old car?
Yes, in most cases it is worth replacing the cambelt on an older car that uses an interference engine, because a belt failure can cause catastrophic engine damage and leave you stranded. If the car is low-value, has a non-interference engine, or parts and labor costs would push the repair beyond the car’s value, you might decide against it.
What matters when deciding
To decide whether to replace the cambelt on an older car, you should consider several factors that affect risk, cost, and value.
Engine design: interference vs non-interference
In interference engines, a snapped belt almost always leads to bent valves and potentially costly repairs. In non-interference engines, belt failure may not damage the engine, though timing can be disrupted and cause performance issues until replacement. Knowing your engine type helps gauge risk.
Car value, condition, and usage
If the car has solid value and you plan to keep it, replacement makes sense. If it’s barely worth the repair, you may not recoup costs. Consider current mileage, overall mechanical condition, and how you use the car (daily driver vs. occasional use).
Availability of parts and service history
Parts for older models can vary in availability and cost. If parts are scarce or expensive, or the car lacks a complete service history, you may face higher costs. A documented history with a recent cambelt service is a strong signal that replacement is prudent.
Costs and what to expect
Understand typical price ranges and what is included in a cambelt replacement so you can evaluate a quote.
- What’s typically included: timing belt kit (belt + tensioner + idler), water pump, coolant, seals, and labor. Not all shops include the water pump; confirm what’s included when you price the job.
- Labor time varies by engine complexity; many cars require 3–6 hours of labor at standard shop rates; performance or turbo models may take longer.
- Parts costs vary by vehicle; belts can be affordable, but OEM kits and water pumps can add to the price, especially for luxury or European makes.
- Additional costs: radiator or thermostat replacement if needed, gasket kits, and potential oil leaks that complicate the job.
Conclusion: When budgeting, add a contingency for parts and potential incidental work. If the car’s resale value is low, you may still proceed if the total cost is reasonable relative to the car’s value.
Signs your cambelt might be due for replacement
Look for visible wear or performance issues that indicate belt degradation or imminent failure.
- Cracking, fraying, or missing teeth on the belt.
- Oil or coolant leaks that contaminate the belt area.
- Squealing noises from the front of the engine or from the water pump when starting or during idle.
- Misfiring, rough idling, or timing-related performance issues.
- Service intervals or mileage approaching/exceeding manufacturer recommendations.
Warning: If you notice any of these signs, avoid driving long distances and consult a mechanic promptly to prevent a potential belt failure and engine damage.
What to do if you’re unsure
If you’re unsure whether to replace the cambelt on an old car, get a diagnostic estimate and a formal quote from a trusted mechanic. A second opinion can help you compare options and decide based on cost, risk, and the car’s value.
Summary
Replacing the cambelt on an older vehicle is typically a prudent move if the engine is interference-type, the car has reasonable value, and the repair cost fits within the car’s overall worth. It protects against catastrophic engine damage, reduces roadside risk, and can preserve resale value. If the car is low-value, has a non-interference engine, or parts are hard to obtain, weigh alternatives or consider decommissioning. Always obtain clear quotes that itemize parts and labor, and consult a trusted mechanic to tailor the decision to your specific car and circumstances.
Is timing belt replacement really necessary?
A: Neglecting to replace your timing belt at the recommended interval can lead to severe engine damage or failure. If the timing belt breaks while the engine is running, it can cause the valves to collide with the pistons, resulting in bent valves, damaged cylinder heads, and potentially catastrophic engine damage.
Do cambelts really need changing?
Cambelts or timing belts usually need to be replaced, usually between 40,000 and 100,000 miles. Alternatively, for lower mileage cars, the belt is advised to be replaced around four or five years.
How much does it cost to replace a timing belt on an old car?
Comparatively, replacing your timing belt is inexpensive, though its full cost will depend on a variety of factors, such as the engine type, maintenance, driving conditions and more. According to our experts, the average timing belt replacement cost will range between $400 and $1,000.
Is it worth fixing a car with a broken timing belt?
Fixing a broken timing belt is worth it if the engine hasn't suffered internal damage; otherwise, it may be too costly.
