Two consumer reports have placed Porsche in last place for reliability. How strange is this? Porsche is a true German prestige manufacturer that always had excellent reliability records. So what is going on here? The problem is the Cayenne SUV. This vehicle is spoiling reliability records for Porsche due to a huge rate of problem per 100 vehicles. But why? The answer is: Volkswagen. The base engine of the Cayenne is a VW sourced V6 but that is not all. Many parts from suspension and underpinnings are common to the VW Touareg SUV. And VW is not known for high reliability so this was bound to happen. Have no fear: Porsche cars are still very advanced and reliable. 911, Boxster, Cayman are very reliable cars although this is probably the least important of their features. Porsche cars are fabulous machines. But in the future Porsche must be very carefull regarding colaborations with VW.