In this study, a brief description of European Foundation for Quality Management (EFQM) excellence model of business was introduced based on Total Quality Management (TQM) concept. Then, an adaptation of EFQM excellence model of business with implementation of multi-criteria decision making processes including Fuzzy Analytic Hierarchical Process (F-AHP), Fuzzy Decision Making Trial and Evaluation Laboratory (F-DEMATEL), Fuzzy Technique for Order Preference Similarity to Ideal Solution (F-TOPSIS), and Fuzzy VIse Kriterijumska Optimizacija Kompromisno Resenje (F-VIKOR) was investigated as a survey on the literatures. Detailed differences of these methods and their influences on the quality assessment policies were studied analytically. Such modified version of EFQM model based on such fuzzy processes was compared with the routine strategies of EFQM. Some different types of fuzzy numbers, defuzzification methods and the way of comparison among them were also discussed in this study. Finally by comparing the advantages and disadvantages of each method, hybrid approaches were found as the most effective method of organizational assessment. © 2019 IJSTR.