Corruption is a pervasive issue that significantly affects various sectors of an economy. It can severely undermine environmental sustainability and obstruct processes aimed at mitigating climate change, a critical issue for the survival of humankind. With these issues in mind, this study focuses on the effects of corruption on the green growth in the original BRICS countries, plus the five new members who joined at the beginning of 2024. In order to investigate this, panel data was collected for the 10 countries between 2001 and 2020. The method of analysis applied was the Autoregressive Distributed Lag model, utilizing the Driscoll-Kraay estimator accompanied by fixed effects, thus enabling short- and long-term dynamics to be assessed. The results show negative long-term repercussions from corruption on green growth for BRICS+, suggesting that countries plagued by high levels of corruption are unlikely to counter the environmental ramifications of accelerated economic growth. The findings underscore the need to combat corruption in order to achieve sustainable and environmentally-friendly economic development, especially as each BRICS+ country is included in the 2030 Agenda for Sustainable Development adopted at the United Nations’ 2015 summit.