The greenhouse effect caused by technological development and industrial pollution has accelerated the speed of global warming and climate change. We make a preview of the current industry and apply a comparative analysis approach to examine the various domestic automotive products which utilise up-to-date innovative technology. Their contribution to fuel consumption and emissions of the greenhouse gas, carbon dioxide (CO2), are then investigated. This study focuses on technical innovation in a conventional engine and output power. The results indicate that innovative engines (such as the Ford turbo petrol/diesel engine, the EcoBoost/TDCi) have improved energy consumption and CO2 emissions.