The main requirements expect from an automobile can be enumerated as follows: Reliable and Safety : It should give long and trouble free running with maximum safety features. Ease and Comfort : It should be easy to operate and park and running should be comfortable , without noise, vibration , pollution, heat and humidity. Economy of Operation: It should be cheap , fuel-economy, maintenance free. Fuel, consumables, spare-parts, labour should be easily available at low cost. Appearance : The shape, size and color should be pleasing . It should need minimum space for parking. In order to meet the complex requirements of a modern automobile , there are large number of systems and parts used. The main components of an automobile are : Basic structure Engine Transmission system Auxiliaries Controls Superstructure
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