For many businesses, the sustainability of their processes and assets is a key strategic priority. In order to meet their strategic sustainability objectives, a number of corporations have started talking about how they are assisting the circular economy. With the transformation of the industry from a linear economy to a circular economy, there is a need to find tools to support this change. Purpose: While efficiency can postpone the inevitable, it cannot change the limited nature of their supplies. Efficiency is defined as lowering the amount of resources and fossil energy used per unit of economic output. Life cycle investment and sustainable asset management are factors that can help with the transition. It is important to support asset managers with tools that can be used as decision criteria in the intended transition. The idea is that managers will be able to support decisions meant to increase value for and from the assets by using this data, by doing so reducing the life cycle investment and increasing sustainability. Method: Considering the comparison of useful life, costs, and profits, a model was used to evaluate the investment life of the asset and its sustainability. Asset management should treat assets as material resources, preserving a maximum quantity of materials, pieces, and components for as long as feasible while, in any event, replenishing them and giving repair, reuse, and recycling priority. Results: The previous method was applied in a light commercial vehicles (LCVs) fleet, where a substantial portion of the investment is attributable to maintenance, which is essential to provide a quality service to the customer. On the other hand, good management of the use of transport must be ensured, guaranteeing its availability. The result objectively demonstrated the relationship between availability and maintenance and how these can lead to the transition to a circular economy, promoting greater sustainability in transport. Conclusion: This study aims to provide managers with new method to improve investment throughout the life cycle, considering availability and sustainability using asset management tools towards the circular economy. This work uses the latest models to provide a case study on the transport industry, taking into account availability and sustainability supported in asset management.