Amidst growing environmental concerns, every individual entity is expected to contribute to preserve our planet. While personal transportation represents a big topic in environmental discussions, mining, construction, agriculture, keep being heavily reliant on diesel engines. Despite the adoption of recent technologies in terms emission control, vehicle manufacturers will be required by law to emit even less polluting agents. This dissertation aims to delve into the lesser-known world of Off-Highway Vehicles, also known as mobile working machines, by understanding how big of a share of the global economy it stands for, and the new challenges revolving around the transition towards cleaner builds faced by Original Equipment Manufacturers, with support from their suppliers.