Failure Assessment of Differential Unit of Automobile: A Case Study

The Dissertation presents differential unit failures on behalf of Toyota vehicles assessed, built upon professionals’ judgment. And this was finished by means of statistics collected by means of approach established on verbal dialogs and survey on failures of differential unit repair. Data obtained were assessed using a statistical approach. With this approach, failure probability for each model of Toyota vehicles namely Corolla, Hilux van, and Hiace buses was assessed. The results collected indicated that Hilux and Corolla vehicles had low catastrophe level on the first time while Hiace motor vehicle had more catastrophe level. Earlier, everymodel of Toyota vehicles observed had their failure rate put together with fixed and steady reliability. As part of this research, 3- sigma quality application presented auxiliary dependability by better-quality Toyota applies oil lubricant method mostly in gears. This revealed Hilux with 94.6% reliability, Corolla 89.6%, and Hiace 73% reliability. The numerical results, from the Bayesian analysis using Matlab program, presented Hilux and Corolla with the highest reliability. This show that more enlightenment adverts among all Toyota Industries will increase the reliability of the differential unit for Hiace buses.