The early design phase of vehicle development defines a significant portion of key hard points, shaping the product's fundamental architecture. Traditionally, evolutionary design processes leverage historic data to guide these decisions. However, during periods of disruption or when pursuing novel concepts, the absence of historical guidance can lead to ill-informed decisions, necessitating late-stage revisions. These revisions often result in substantial resource expenditures and the invalidation of earlier studies. This contribution addresses these challenges by transforming the traditionally siloed concept-phase activities into an integrated, cross-functional optimization task. It focuses on uniting three critical workstreams: styling, aerodynamics and thermal management, and structural development, to create a synergistic design approach. The following key enablers facilitate this integration: 1.Unified Data Model: Bridging the diverse domains to ease collaboration 2.Centralized Communication and Tracking: An object-based approach to ensure alignment and transparency. 3.Associative Workflows: Seamlessly linking design, geometry and simulation 4.Parametric Design: Understanding the system’s performance and solving multi-domain, multi-objective design decisions The proposed methodology demonstrates how early technical linkage between these domains fosters robust decision-making, reduces late-stage design disruptions, and enables efficient exploration of the design space.