When I purchased the car 13 months ago, I asked if the timing tensioner and chains have been changed? I was given a Service Work Order showing all the work done 1 month prior to me purchasing the Audi Q5 and what was covered at the time when the work was completed and parts shown with OEM Audi Part #'s. They failed within 5,000 miles and 13 months. The parts were NOT made correctly resulting in Tragic Engine failure and the Auto just quit when I was pulling out into traffic. Luckily I was not involved in an accident.