Week 6
Statistical Process Control
Agenda
Introduction
Number of Ford Focus sold
Number of Ford Focus recalled
Summary and Recommendations
References
2
Introduction
Statistical Process Control
Method used for quality control
Ford Focus transmission problems
Statistical Process Control is a process that is used for quality control of a item. It monitors and control any process to ensure operations are at the full potential. In this case, Ford has been having many transmission issues with the Focus since 2012.
3
Number of Ford Focus sold
I Chart represents 1k units per month for last 40 months
Second chart: Yearly sales
Sales decreased by 89,133
Sales for the Focus have been on a rollercoaster ride since December 2015. When you observe the yearly sales you can see this vehicle has been on a rapid decline in sales.
4
I Control Chart
Sample Means 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 11 13 19 19 16 17 19 14 12 11 9 9 10 10 13 14 13 17 15 16 13 12 10 13 11 7 12 16 13 16 11 9 9 7 5 4 4 7 2 1 UCL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 15.452776989084956 Mean 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 11.475 LCL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044 7.497223010915044Time Point
Thousand Per Month Value
Equipped cars with new shifting transmission (bad concept)
First year 3,469 reported problems
Consistent software updates or replacing transmission
Number of Ford Focus recalled
Vehicles were equipped with a “dry” method clutch instead of a “wet” one. Caused vehicles to have problems downshifting. When accelerating, vehicle would hesitate and keep it from reaching speeds of a normal vehicle. There have been consistent software updates and even replacing the transmission 2-4 times within a 3-4 year of ownership. This is clearly a Lean Six Sigma Waste. It would fall under defects.
5
Summary and Recommendations
Remove defected vehicles from roadways
Offer incentives to help remove defected vehicles
Should settle any pending lawsuits
Because the Focus has taken such a devasting lost over the years. It is best for Ford to stop production on this vehicle. If they continue to produce this vehicle, it could put someone in the biggest danger, death. For the vehicles that are currently being used, incentives should be given to return the vehicle. These incentives would be use to purchased another vehicle in Ford’s lineup. This should settle any lawsuits and help with Ford’s market value and image.
6
References
Ford Focus Sales Numbers(2019). Retrieved from http://fordauthority.com/fmc/ford-motor-company-sales-numbers/ford-sales-numbers/ford-focus-sales-numbers/
Ford Focus - Problems, Statistics, and Analysis(2019). Retrieved from http://www.carproblemzoo.com/ford/focus/
Ford's Transmission Problem(n.d.). Retrieved from http://www.fordtransmissionproblems.com/fords-transmission-problem/
7