A modular vehicle assembly platform is disclosed. In some embodiments, the platform may comprise a cast bulkhead, a cast cowl, one or more cast front strut towers, a front subframe, a cross-car beam, one or more door rings, a structural central floor comprising a battery, a cast structural rear floor, a cast upper rear section (or d-ring), and a rear motor cradle. The platform may allow for the use of common parts and structure across different vehicle types.