In all the internal combustion engines whether fitted on trucks,tractors, buses,cax:s or motor-cycles etc. it is necessary to have exhaust gases let out to the open away from the passengers anddriver with less sound. This paper introduces an experimental study has been carried out to investigate the acoustic performance of exhaust silencer components. In particular,the performance of the open exhaust pipe, the expansion chamber, and the reso-nator at different engine speeds and loads is outlined. The influence of car speed on the acoustic performance of exhaust silencer else has been investigated. Exhaust noise spectra were recorded and the overall noise level were Measured.