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This study investigates and evaluates the European expert's selection and conjoined degree of willingness to decrease the carbon footprint (WDC) of consuming products and services to mitigate climate change. The survey respondents were segregated into four European regions based on their nationality viz. Nordic, Baltic, and Eastern Europe (NBE), Central and South-eastern Europe (CSE), Western and southern Europe (WSE), and North-western Europe (NWE). The WDC are represented by four index categories viz. low willing, moderate willing, willing, and highly willing. The WDC indicators such as housing, food, energy, waste and transport were used to identify the trend and correlation, gender-specific density distribution, and overall regional comparison analysis. The trend and correlation analysis between energy vs. transport, waste vs. food, and a separate state of housing represented the current global carbon emission situation, where four overlapping clusters indicated the respondent's closest or similar selection at their consumption level. The gender-specific density suggests that the male respondent's average WDC for housing and food index ranges from moderate to highly willing. In contrast, the female average WDC for food, waste, energy and transport index ranges from moderate willing to willing and bimodal for other scenarios. Among the regional comparisons, NBE in housing (moderate willing to willing), CSE in food (willing to highly willing), WSE and CSE in energy and all the regions in waste management (willing to highly willing) presented better indices. In transport, Europe as a whole exhibits poor index. In case of WDC index, the regional comparison indicates that the CSE region exhibited better outcomes than the other regions, except for housing. The findings of this study will be beneficial for the common people, researchers, policymakers, and regulators to enrich their future thoughts and contributes to the development and improvement of the existing carbon reduction policies, especially in the transport sector. • Investigates the European expert's willingness to decrease carbon footprint (WDC). • Nordic, Central, & Western experts exhibited top WDC in housing, food, & energy. • In the WDC of waste, experts from all the regions presented better signs. • In the WDC of transport, all the areas showed poor index. • In general, the central part showed better WDC indices than other areas. [ABSTRACT FROM AUTHOR]