With a primary focus on green machining techniques, this review study offers a thorough overview of the machining of α (alpha) -β (beta) titanium alloy, specifically Ti6Al4V, using PVD and CVD coated carbide inserts. Using knowledge from studies using the Taguchi technique, the examination synthesizes previous research findings on Ra (surface roughness), energy efficiency, power factor, and total cutting energy required for machining. Depth of cut (DOC), Cutting speed and Feed rate are taken into consideration when we examine Ra (surface roughness), a crucial machining quality indicator, in different scenarios. The effect of PVD and CVD coatings on carbide inserts, which are intended to improve wear resistance, on obtaining the best possible surface finishes in Ti–6Al–4V machining applications is investigated. In the context of green machining, the review highlights the importance of power factor and energy efficiency. A summary of previous studies on the effects of machining operations on the environment is provided, with an emphasis on tactics and innovations that support environmentally friendly production methods.