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This work presents the corrosion protection behaviour of mild steel in neutral saline conditions (salt spray/immersion) by using coatings based on chlorinated rubber and benzene-sulfonate (BS) or lignosulfonate (LS)–doped polyaniline (PANI). Standardized accelerated (salt spray) and immersion tests were performed to assess the protective performance of the coatings. Analysis and interpretation of the experimental data (i.e., EIS, potentiodynamic data and visual observations) showed that both PANI–BS and PANI–LS inhibit corrosion of painted steel exposed to a 3.5% NaCl solution. Among the tested concentrations (0.5, 1.5 and 3wt.%), the greatest inhibition was observed at low concentration of PANI–BS (0.5%). Samples with higher PANI–BS loadings (1.5 and 3%) appear severely corroded after 560h of salt spray exposure, which was related to the release of corrosive benzene sulfonic acid. On the contrary …