The German language is a tricky language. A unique characteristic is the formation of enormously long single words such as "Arbeiterunfallversicherungsgesetz“ (workers' compensation insurance), "Dampfschifffahrtsgesellschaft“ (steam shipping company) or just "Hydraulikbremsanlage" (hydraulic brake system) – which was only one of many complex words that we used in the original copy of the 'inspection ad' to make troubleshooting even more challenging and entertaining.

Audi not only offers first-class new cars, but equally well-used ones. To demonstrate to the target group how precisely Audi checks every used car, we sent potential customers for troubleshooting themselves. Not on a car but in a longcopy ad. In 1518 individual parts (characters), we hid exactly one mistake. Just as it can be the case with a used car. The readers had the task to find this mistake. In this playful way, the readers spent a lot time longer and more intensively studying the Audi services for used cars and were able to experience first-hand how exactly one must look to find a hidden fault.