Timing belt replacements will be one of the most costly items you encounter while owning a car. If you choose a belt-driven Alfa Romeo or Fiat, you could be replacing it every four years, while a Volvo XC90 is scheduled for timing-belt replacement at 180,000km or 10 years.
Volkswagens mostly fall due at 105,000km, but there are a few that need replacing at 90,000km, so check your service schedule or ask your mechanic when it is due.
Most water pumps are driven by the timing belt so it’s good practice to replace the water pump when the belt is replaced. Most reputable mechanics will recommend the belt and water pump are replaced with new tensioners and pulleys to ensure the replacement is a quality job.
Most timing-belt replacements will take between three and five hours on top of a regular service, but some can be longer. Pending advice to the contrary, you should plan for the car to be in the workshop for a couple of days.
Expect an invoice of upwards from $750 for a timing belt replacement on top of a service.
Many customers worry that they're being taken for a ride by their mechanics, but as often as not there's a reason why the quote for an engine replacement or rebuild is higher than expected. If you're worried that the quote is excessive, obtain another quote and compare notes.
Declaration: in addition to being a contributor to carsales, the author of this advice guide is the co-owner and operator of an independent repair workshop.