The Christian Doppler Laboratory (CD-Lab) for Engine and Vehicle Acoustics started in October 1998 in order to support solutions for industrial applications by using the expertise of university research results. The main focus of this CD-Lab is on the development of new methodology and modelling techniques for the numerical simulation of noise source mechanisms and noise transfer in engines and power units. The knowledge in multi-body dynamics combined with lubricated oil contacts has been refined and enhanced for this aim by specific detailed research work. The know-how derived for specific models (e.g. piston slap noise, gear and chain noise) is the base for extended vibro-acoustic models of the entire power train. Furthermore, the simulation of the noise excitation of the car body structure via the engine mounts is investigated. Besides competence in structural dynamics, contact dynamics and acoustics, a high level knowledge of the relevant mathematical and programming background has been build up. Contacts to other research institutions support the work of the CD-Lab and the international exchange of the latest results e.g. with Loughborough University and ISVR in GB, the ACC (Acoustics Competence Centre mbH, Graz), the Industrial Mathematics Competence Center (IMCC) and with the Institute of Mathematics, TU Graz. The CD-Lab supported the organisation of the EC-Project VISPeR (Vehicle Integral Simulation for Pass-by Noise Reduction).