The machine-building complex is one of the key sectors of Russia's industry, having a significant impact on the economic development of the region and the country as a whole. In the modern market economy, the efficiency and competitiveness of machine-building enterprises largely depend on the level of investment, which ensures the renewal of production facilities, the introduction of innovative technologies, and the improvement of product quality. In the Samara region, which is one of the most important industrial centers in the country, investment activities in the machine-building sector are of particular importance for ensuring its sustainable development and increasing its contribution to the regional economy. The relevance of this topic is due to the need to study the mechanisms and factors that influence the attraction of investments in the region's engineering sector, as well as to assess their effectiveness. In the context of sanctions restrictions and global economic challenges, the development of engineering enterprises in the Samara region requires the search for new approaches to stimulating investment, which makes the chosen topic particularly relevant for scientific research and practical recommendations. The analysis of the investment situation will allow us to identify problematic aspects and propose solutions that will contribute to increasing the innovative potential and competitiveness of the region's engineering complex.