Petrol and diesel form the backbone of today's road transport. The internal combustion engine has been used in vehicles for about 100 years. But the problem with engines is the limitation of fossil fuel reserves and greenhouse gas emissions responsible for global warming. These fossil fuels generate emissions of pollutants such as PM, Nox and CO which are dangerous for humans. There is an urgent need to ensure that other renewable energy sources overcome the energy crisis and achieve decarburization, energy security and cleaner air to breathe. Fuel cells are devices that convert chemical energy into electrical energy without emitting harmful exhaust gases. This document summarizes the configuration of the fuel cell hybrid vehicle. It briefly describes the function of each component and the losses that occur in each component. Fuel cells are the quietest and most reliable since they have no moving parts. The efficiency is about double that of the internal combustion engine. [2]. There is no Carnot limitation as in the case of the internal combustion engine. The most commonly used fuel cell is the hydrogen fuel cell in the polymer electrolyte membrane fuel cell (PEMFC). Hydrogen is a clean burning fuel. The discharge is pure water. In this article, the combination of a fuel cell with a battery is studied. Fuel cell hybridization helps reduce the size of the fuel cell and its initial cost, but increases vehicle complexity, weight, and battery cost. At higher loads and increased acceleration, the battery provides excess power and increases the efficiency of the fuel cell. At low loads the fuel cell is used to provide the required power. The battery is also used for starting the vehicle... middle of the paper... by 2030. The cost of FCHEVs and BEVs is not largely affected by changes in electricity costs, but the ICE costs and FCEVs are strongly influenced by the cost of fuel. This occurs in part due to different powertrain efficiencies. Comparing the overall life cycle costs, it can be observed that FCHEV and BEV are cheaper than FCEV and ICE. But FCHEVs and BEVs are sensitive to overall capital and operating costs. For example, BEVs in particular are sensitive to battery size. The life cycle costs of ICEs and BEVs are approximately 1.75 times higher than those of FCHEVs and BEVs. There are several challenges to be addressed in the near future for FCHEVs to achieve commercialization, reliability, cost-effectiveness and performance. Fuel cell hybrid vehicles can certainly represent the clean technology used in the future of automotive engines.