Excellent control of braking system in automobile is the essential for safety of brakingrnperformance. The brake disc is affected by type of friction material of brake pad. Therndetermination of mechanical interaction that happen between brake disc of automobile and brakernpads are very important in design consideration of braking system of automobiles. rnFor this investigation, the TOYOTA HIACE minibus taxi of 12 seats that used in Ethiopia Cityrnis taken as a sample. While, the problem occurred in this automobile is most of time failure ofrnbrake pads when braking is applied, and wear and fade of brake disc is occurred. Due to this kindrnof problem some time accident is happen; so the cause of this kind of problem happens in brakerndisc and brake pad of automobiles of TOYOTA HIACE minibus taxi that used in Ethiopian Cityrnis the idealization of selection of good performance friction material of brake pad withrncorresponding brake disc. Further, due to lack of consideration for selecting best friction materialrnof brake pad with environmental friendliness, in the case of TOYOTA HIACE automobiles dustrnis produced from friction material of brake pad during braking time affect the aquatic life. Thus,rnthe study of mechanical properties of brake disc with interface of brake pad by finite elementrnmethod with the help of ANSYS software and experimental investigation of friction materials ofrnbrake disc used in local City taxi is very important regarding to best braking performance ofrnautomobiles and environmental protection. rnHence, as result obtain from analysis of finite element method with the help of software andrnexperimental result of laboratory test; for safe environmental protection, reducing (or) free ofrnCopper in brake pad of automobile especially in brake pad of TOYOTA-HIACE minibus 5L.rnAnd the use of Al-MMC brake disc with Ceramic brake pad is best for braking performance ofrnautomobiles rather than other interface.