Cathodic protection (CP) technology is widely utilized to safeguard aboveground storage tanks (ASTs) against soil-side corrosion, with the U.S. Department of Transportation mandating the implementation of CP systems for ASTs governed by federal regulations. CP is typically applied to the new ASTs bottom through the installation of anodes under the tanks. The anodic portion of impressed current cathodic protection (ICCP) systems consists of titanium conductor bars and mixed metal oxide (MMO) anodes which are embedded in the sand bed a few inches below the new bottoms. To enhance the soil-side protection of tank bottoms, the combined usage of Vapor Corrosion Inhibitors (VCIs) and CP systems has shown promise. Previous studies have indicated that the use of VCIs and CP is synergistic, and the performance of anodes remained unaffected by the presence of VCIs. Building upon these findings, the present research aims to investigate the integrity of titanium substrate MMO anodes in the presence of VCIs. This study focuses on the electrochemical characteristics of titanium substrate mixed metal oxide (MMO), in conjunction with VCIs. Through the utilization of ASTM G61, the research findings suggest that the pitting immunity nature of MMO and titanium anodes remains unaltered in the presence of VCIs.