Your timing belt makes sure the different parts of your engine move in sync, and if it starts to fail, you’ll want to replace it as soon as possible. But what will that cost? Will your warranty help?

I drive a 2003 Jetta TDI Wagon with 125,000 kilometres on the odometer. The timing belt replacement interval is 160,000 but I had it replaced after 10 years/100,000 km. The only immediate benefit was ...