Background: Global incidence of Type-2 diabetes mellitus (T2DM) and the detrimental effects that it has on the hearing ability of individuals causes pathophysiological changes. With the help of evoked potential techniques, the brain stem auditory response represents a simple procedure to detect both acoustic nerve and central nervous system pathway damage. Objective: The present study was to investigate hearing function by brainstem evoked response audiometry (BERA) in well characterized type 2 Diabetic patients, with the role of potentially relevant factors such as duration of its disease and was target, these finding might help to determine early subclinical hearing impairment in these patients. Method: In clinical and laboratory setting, participants were divided randomly into following groups. Group I-(n=50) - control group and the study group were diabetic Individuals such as patients having diabetes less than or equal to five years ≤ 5 years) (n=29) and patients having diabetes more than five years ( > 5 years) (n=21) and were examined for BERA abnormalities (for 70, 80 and 90 db. Result: We observed a significant difference (‘p’<0.05) in BERA abnormalities (for 70, 80 and 90 db), in study group when compare to control. There were statistically significant delayed in absolute latencies of respective wave in both left ear and right ear, however interpeak latency side was comparable in both left and right ear. Conclusion: This study suggests that duration of diabetes may play a significant important role in the occurrence of diabetes mellitus associated hearing loss and patients may suffer from hearing impairment sooner or later, however if detected early further deterioration in auditory function can be prevented if not treated and also suggested that BERA testing may include in the routine screening procedures that are of vital importance in diabetic patients, wherever it is possible.