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Meeting new emission standards can be a challenging task, where many optimization parameters often lead to a variety of hardware designs and engine control strategies. Moreover, the life cycle of an exhaust gas aftertreatment system (EATS) is much shorter compared to the engine. Resource demanding and costly engineering programs are therefore common. The aftertreatment upgrade to Euro6b compliance for the 2.4 l five-cylinder Volvo Environmental Diesel engine (VED5) represents an exception. Based on two fundamentally different metalwork designs for front wheel- and all-wheel drive (FWD and AWD respectively) vehicles and carefully adapted control strategies, the Euro5 base design was transferred with minimal hardware changes.