The previous study of that recommended the electric powertrain, is strengthened by this study, where the result could be used to avoid many economic uncertainty factors from the decision-making process for public bus procurement. A potential shortcoming of this study is the lack of real life testing of the assumptions and scenarios. Also the numbers presented depend on the reliability of the sources might not in great precision that may affect the result, however it gives a good indicator to show the
most likely TCO and its influential factors.