Date palm fibre (DPF)/polymer composites are being employed extensively in many significant applications recently, including home furnishings, sports equipment, automobile parts, and building insulation systems. The failure analysis of the date palm fibre reinforced polymer composite is the main topic of this review. The failure of the date palm fibre reinforced polymer composite was examined by the researchers in relation to a number of parameters. These variables include the kind of polymer matrix, manufacturing processes, fibre treatment, and composite hybridization with date palm fibre and other fibre. The literature also examined the impact of date palm fiber size on the failure of date palm fibre reinforced polymer composites. Recent research has demonstrated that the chemical treatment of DPF enhances the mechanical characteristics of the polymer/DPF composite and strengthens the link between the polymer and fibre, hence lowering the likelihood of composite failure. Reinforcing polymer matrices with a hybrid of DPF and other fiber improved the composite's mechanical qualities and decreased the chance of failure. DPF may be used to reinforce a wide variety of polymer matrices using various production processes, therefore lowering the likelihood of failure and selecting the optimal polymer composite qualities. As the DPF diameter shrank, the mechanical properties of polymer/DPF composites improved and the likelihood of failure dropped. As the length of the fiber rose to 12 mm, its mechanical properties improved and its likelihood of failure reduced.