Hot corrosion is a critical issue in gas turbine components as it severely affects the performance. In view of this the hot corrosion behaviour of electroless nanostructured ceria coatings was studied in an aggressive environment of V2O5-40%Na2SO4. Nickel-based superalloy, Superni 718, was used as the substrate. The study was conducted at 1173 K for 100 h. Micro-structural characterization of the coating surface and cross-section, before and after hot corrosion, was done using SEM/EDS. The phases were analysed with the help of XRD. The hot corrosion kinetics of the process was investigated by determining the weight variation after each cycle, consisting of 1 hour of heating at 1173 K followed by cooling up to room temperature. It was concluded that the hot corrosion behaviour of substrate was significantly improved by the application of ceria coatings and the effect became more pronounced as the concentration of cerium increases.