In this work , the validation of a quarter scale DrivAer model based on Detached-Eddy Simulation (DES) is proposed. The study has been conducted through the open-source software OpenFOAM, adopting a transient solver based on the Navier-Stokes equations. The Delayed Detached-Eddy Simulation (DDES), variation of pure DES, has been implemented. The turbulence model adopted is the Spalart-Allmaras, based on a single transport equation. First, half computational domain has been generated. The longitudinal symmetry plane has been used in order to split the domain into two symmetric halves. In so doing, the simulation time has been reduced. The flow has been considered as incompressible, because of low Mach numbers involved.