Please post link for "Data set of which vehicle i.e car bus, truck two wheeler or four wheeler etc". (Note: - Data set is required for clustering purpose)
A professional provider of automotive benchmark data is A2mac (A2mac1.com). This company analysis available cars on the market in view of general data and by disassamblind the cars. In this way, there is lots of information available about the components, their dimensions, weight and materials.
When looking for specific propulsion-related information, I can recommend the FEV benchmark due to its high quality information content (www.fev.com => test-systems-products)