Recognising the broader role and impact of engineering in contemporary society makes it necessary to rethink engineering education to strengthen its purpose of service to humanity and to the common good. From this perspective, future engineers need a more comprehensive education that is not only bound to the technical area but also incorporates critical reflection and ethical education. With the objective of facilitating the process of rethinking engineering education, the present study analyses the official mission of Portuguese higher education institutions offering engineering courses to identify current engineering education conceptions and the importance attached in them to the service to humanity view. The results reveal that the dominant conception is centred on the economic view of engineering and of the engineer. These results reinforce the need to build a new perspective that strengthens the role of engineering as a service to humanity, social justice and the common good.