A front structure of a vehicle , said front structure comprising - a front exterior and/or a bumper , - a pair of side members arranged in a longitudinal direction (L) of said vehicle at a respective left-side portion and right-hand portion of a front portion of said vehicle , - a pair of crash boxes arranged at a respective front end of each of said side members , said crash boxes having a lower axial strength than said side members , - at least one stiff component, such as an engine , and - a body back-up structure , located at a rear end of said front portion , said front structure is adapted to give an impact response curve with deceleration versus time, when subjected to a full frontal barrier impact at 56,327 km/h (35 mph) according to USNCAP, said impact response curve having in sequence - a first phase, during which an deceleration increases, - a second phase, forming a first peak level of the deceleration, - a third phase, during which the deceleration is less than during the second phase, and - a fourth phase, forming a second peak level of the deceleration, during which fourth phase the deceleration is greater than during the third phase, characterized in that said side members further comprise a support at their respective rear ends, e.g. a triangular or Y-shaped support, said support being stiffer than the rest of said side members , and wherein said front exterior and/or bumper , said side members and said crash boxes are arranged, dimensioned and/or shaped in relation to each other, such that in case of said full frontal barrier impact at 56,327 km/h (35 mph) according to USNCAP, - during said first phase, said front exterior is compressed and/or said bumper deforms, - during said second phase, said crash boxes are compressed, and - during said third phase, said side members bend at least partly laterally in relation to a longitudinal centre-line of said vehicle , whereby a deceleration achieved by said front exterior being compressed and/or said bumper deforming is less than a deceleration achieved by said crash boxes being compressed, and a deceleration achieved by said side members bending is less than said deceleration achieved by said crash boxes being compressed. - a front exterior and/or a bumper , - a pair of side members arranged in a longitudinal direction (L) of said vehicle at a respective left-side portion and right-hand portion of a front portion of said vehicle , - a pair of crash boxes arranged at a respective front end of each of said side members , said crash boxes having a lower axial strength than said side members , - at least one stiff component, such as an engine , and - a body back-up structure , located at a rear end of said front portion , - a first phase, during which an deceleration increases, - a second phase, forming a first peak level of the deceleration, - a third phase, during which the deceleration is less than during the second phase, and - a fourth phase, forming a second peak level of the deceleration, during which fourth phase the deceleration is greater than during the third phase, characterized in that - during said first phase, said front exterior is compressed and/or said bumper deforms, - during said second phase, said crash boxes are compressed, and - during said third phase, said side members bend at least partly laterally in relation to a longitudinal centre-line of said vehicle , <EOS>