After the passenger car market has been driven by regulation to ever greater CO2 optimization over the past ten years, it is time for the EU’s second-largest cause of greenhouse gas emissions in road traffic: heavy-duty vehicles (HDV) like commercial trucks or buses. In this article, fka give a brief insight into the legislation before taking a closer look at the starting position of CO2 emissions at HDV. Then, the alternative technology strategies and their dependence on specific fields of application are presented. In a conclusion, fka shares their thoughts around the direct implications on the value chain.