Hi, I'm Pat and I own a Q3 - I have joined today. What is the required period for replacement of the timing belt. In the last 6 months I have become aware of belt failures in Ford Escorts, Volvo XC60 and an Audi A3. I have spoken with many people and been given ranges from 40k to 186k. Being totally confused, I went into my local Audi Dealer (Farnborough) to get a definitive answer. Having explained my confusion to the representative there, I was shown a document entitled Service Related Items. The document consisted of 1 page only and it did not specify what models the inspections applied to. I was allowed to take a photo of the document. Regarding the timing belt - it listed the replacement frequency as 186,500 miles or 15 years. I'm even more confused now. Thoughts please.