Expanding engineering capacity without permanent headcount growth and the role of specialized technical consulting in automotive product development

Electrification, the growing role of software and shorter development cycles have increased the demand for engineering at automakers and automotive suppliers, while cost pressure discourages the permanent expansion of in-house teams. This paper analyses, through a narrative review of the literature on product development management, organizational economics and knowledge-intensive business services, how firms in the sector can expand their engineering capacity by drawing on external specialists and which conditions make this strategy effective. The review covers classic studies on automotive project performance, transaction cost theory, core competences, supplier involvement, cost of delay, engineering change and absorptive capacity, as well as the Brazilian regulatory framework that encourages research and development. The results indicate that contracting external engineering can reduce lead time and rework when it is focused on well-defined activities and when the contracting firm retains the architectural knowledge of the product and the capability to integrate the contributions it receives. Without this internal base, outsourcing tends to create dependence, loss of learning and coordination problems. A typology of contracting modes is proposed, linking each one to its risks and theoretical foundations. It is concluded that specialized technical consulting is a complement to, rather than a substitute for, the engineering competence of the contracting firm.