This study evaluated the neck biofidelity of THOR-AV, THOR and Hybrid III 50th dummies in six test conditions. The results showed the neck overall BioRank scores are 1.48, 1.89 and 1.97 for THOR-AV, THOR and Hybrid 50th respectively, all corresponding to “good” biofidelity according to the current NHTSA BioRank method (the lower the score, the better the biofidelity). The THOR-AV neck design has a lordosis curvature, a torsion element and an increased cross section from C1 to C7 in its design. These features in THOR-AV neck design closely reflect human anthropometry and most likely contributed to the improved kinematics and biofidelity.