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Triggered by the need for a reduction of CO2-emissions a variety of new powertrain-concepts had been brought up in the latest years. These concepts are ranging from “Micro-Hybrid” over “Full-Hybrid” up to cars powered by an electric machine. Integration of those new powertrain-concepts into passenger vehicles leads to new demands on the acoustic development. The acoustic development process as many other processes in vehicle engineering follows the so called “V-Model”. Coming from overall subjective and objective N&V-targets, which have to be defined at the very beginning of a vehicle development project, it is essential to break down these targets to system (and even component) level in order to be able to handle the work split between complete vehicle responsibility and suppliers. In the development process these defined targets have to be reached and validated coming from system level to full vehicle level.