The paper addresses identification and analysis of individual costs of a life-cycle of engines for railways that meet required emission limits according to STAGE III.B.A cost analysis ofa life-cycle is an effective tool, which allows for observation of various options of technical solutions. The result of an LCC analysis is the basis on which a decision is made about selecting a technical solution of power drive of locomotives and efficiency of the solution with one or three combustion engines. The result is also preparation of a life-cycle costs identification method for specific locomotive engines and initial evaluation of advantages, specifically disadvantages of the solution.