It is crucial for car manufacturers to be able to simulate the non-linearities (NL) present in the vehicles to allow a greater insight avoiding time-consuming and expensive testing during development and following phases. This thesis has the aim to extract, analyze and reproduce the non-linearities detected from test results, in both 3D Multi Body Simulation (MBS) at suspension level and on a more general 1D Full Vehicle (FV) level. To model non-linearities, typically test data is acquired providing both the input force or moment and the output displacement, velocity, or acceleration. It is to be considered that this is possible only with a component on a test bench but not entirely feasible when a full vehicle that is driving on the road is considered.