The continuous demand placed on emission performance by governments of different countries by means of strict emission standards would require commercial cars to adopt advanced technologies such as EGR, DPF, and SCR to regulate NOx emission levels.The predominance of diesel engines in medium and heavy duty commercial engines is a major driving factor for the SCR market since SCR is primarily installed in diesel engines for controlling NOx emissions.Light commercial vehicles have the highest volume of SCR globally since they outnumber the medium and heavy commercial vehicles by a heavy margin.The increase in the transportation of freight and renewal of aging fleets in the US,China, and India will drive the market for SCR in heavy commercial vehicles.Promotion of alternative fuels and hybrid commercial vehicles by local government bodies in a bid to support green transportation will act as an impediment to the growth of SCR market.This report covers the present scenario and the future prospects of the global selective catalytic reduction (SCR) market for diesel commercial vehicles for 2016-2020.