The main purpose of this study is to examine the difficulties encountered by external auditors in compliance with Quality Control Standard. This research is evaluating the impact of audit quality factors on audit companies in Turkey according to Quality Control Standard. Moreover, this study analyzes auditors’ perception of audit quality in Turkey and determines the factors, which are influencing audit quality. It attempts to explore auditors’ opinions on difficulties that auditors’ experience and factors that influence audit quality. The research method of this study is to interview with auditors, who have experience on audit over 20 years and working at audit companies, which audited more than 95% of listed companies in 2015. Auditors have been chosen randomly. Interviews with auditors empirically examine Turkish auditors perceptions on the audit quality and their problems with application of standards. According to the findings of this research the factors influencing audit quality in Turkey have been identified and as a result, the aspects in regards to the audit quality in terms of legal regulations have been determined and suggestions have been provided.