Toyota’s success in the utilization of Six Sigma hasn’t gone unnoticed. Six Sigma initiatives at Toyota have delivered marked improvements in manufacturing quality, time to market, and inventory balances (Supply, 2009). Toyota accomplished this by vigorously focusing on process improvement to reduce waste and optimize workflow. Toyota’s house of quality has consistently translated to superior cars at lesser prices for customers. TQM, Lean, Six Sigma, and now Lean Six Sigma have been corner stones of Toyota’s operations for more than 30 years. Toyota is the most well known business to champion Six Sigma. The collapse of the world financial markets in 2008 also brought Six Sigma methodology into the mortgage, banking, and health care industries. DoD contractors (Northrop Grumman, Boeing, Lockheed Martin, etc.) are required to illustrate Six Sigma proficiency to bid for government contracts. government also employs Six Sigma throughout all military branches. Over the years, Six Sigma utilization has expanded from mainstream manufacturers such as Maytag and Allied Signal to include industry-leading service providers such as GEICO, Best Buy, and Xerox (Bright Hub Inc., 2010). ![]() Since the late 1990s, Six Sigma has also adopted many principles of Lean manufacturing developed from the Toyota Production System (TPS) and is hence often referred to as Lean Six Sigma. ![]() The origins of Six Sigma trace back to Statistical Process Control (SPC) and Total Quality Management (TQM). Six Sigma is a methodology focused on reducing defects and variation of a process by focusing on the process customer.
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