Remanufacturing is a value-retaining process that can be adopted to reach a more circular economy. It presents a promising opportunity for improving resource efficiency and enhancing sustainable activities today and in the future. This paper contains environmental assessments of remanufactured automotive parts compared to newly produced parts. The aim is to address the potential of reducing global warming impact as well as improving resource and energy efficiency. The result is used to assess the potential of applying a remanufacturing strategy to reduce environmental load and to determine the variables that are of major importance. Assumptions, methods, and data are consistently applied for all product groups, making it possible to draw conclusions considering specific characteristics of the different automotive parts. The results show that collecting used automotive parts (cores) and remanufacturing them leads to a substantially lower environmental load than when producing new parts. The reuse rate of a core and the energy used in the remanufacturing process are the main environmental hotspots. Reusing larger components primarily affects global warming and energy use, while the type of material is the main aspect regarding abiotic resources. Energy use is a primary contributing factor considering global warming and cumulative energy use. The overall effects due to transports are similar for the two product systems, even though the payload is lower with remanufacturing due to higher share of transports with trucks.