Structure for the front of a vehicle, of the type with deformation control for the safeguarding of pedestrians, cooperating with a sensor to detect approaching or actual impacts and including at least one air bag placed below the front bonnet component, and the front part of the vehicle having a "soft nose" shape The structure includes at least a frontal interchangeable pre-assembled module, made of a thermoplastic material that includes the motor bonnet covering, the bumper covering and the covering of the mudguards, respectively left and right, the pre-assembled module, in correspondence with the front side, is hinged underneath the front of the vehicle, and where at least on one side is deformable or capable of being raised by air bags placed under the module interacting with the sensor, while maintaining the rear portion coupled.