Requirements for sustainable development and green technology are motivating car manufacturers to produce newer efficient engines with more power and reduce hazardous emissions. The development of modern engines has certain constraints since prototyping phase requires longer time and is costly. Engine computational modelling now becomes a useful approach and can be used as a predictive tool when developing new engine concepts. The aim of this work is to develop and experimentally validate a turbocharged diesel engine model using one-dimensional GT-Power software. The engine performance parameters in terms of power and torque which are dependent to engine speed are being presented. The predicted performance parameter of the engine model is compared with the data obtained during engine dynamometer experiments. The simulation results show that the engine performances such as engine power and torque are in good agreement with the experiment results within the engine rpm range from 2000 rpm to 3000 rpm (with RMS Error for engine power and torque is 10% and 39%).