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Bleeker We begin with the following table of Reliability Score averages for model year 1998, that year for which the 2006 updates accord an 8-year history. Next, for each line and manufacturer, we plot these averages and have Microsoft Excel compute the regression line equation. For Toyota Motor Corporation, Honda Motor Company, Ford Motor Company, General Motors Corporation, and the Chrysler Group of DaimlerChrysler AG, the regression lines and their equations are given in the following chart. The coefficient of the x-variable of the regression line equation for each motor vehicle line and manufacturer provides us with an estimated rate of vehicle deterioration for that line or manufacturer. These rates, rounded to two significant digits, appear in the following table. Next, we normalize these rates of deterioration by giving Toyota Motor Corporation a deterioration rate of -1. This will give the estimated average speed of vehicular deterioration for each line and manufacturer relative to that for Toyota Motor Corporation. These normalized rates, rounded to two significant digits, appear in the following table. The following chart helps depict these rates of deterioration. Note that the vehicle deterioration within the Lexus line is quite negligible relative to that within any other line. Finally, it must be noted that the rate of vehicular deterioration is only one factor in measuring the trouble-prone nature of Big Three vehicles, and GM vehicles in particular. The other factor is that Big Three vehicles, and GM vehicles in particular, start off more trouble-prone, before speedily worsening. This is best demonstrated by the y-intercepts of the regression equations in the first of the above charts. These intercepts are summarized in the following table. Y-Axis Intercepts of the Regression Equations for the Reliability Score Averages of Honda Motor Company, Toyota Motor Corporation, the Chrysler Group of DaimlerChrysler AG, Ford Motor Company, and General Motors Corporation Manufacturer Y-Axis Intercept Honda Motor Company .894 Toyota Motor Corporation .853 Chrysler Group of DaimlerChrysler AG .794 Ford Motor Company .685 General Motors Corporation .623 The following chart helps depict the gaps from the y-axis intercept of Honda's regression equation to each of the above remaining y-axis intercepts. For the cumulative effect of a comparatively large initial need for repairs - low initial Reliability Score average - and a relatively speedy rate of deterioration, see "The 2006 Updates: Honda Age-Equivalent Estimates: Estimates of When a Typical 1998 Model of Honda Motor Company Will Be as Troublesome as Typical 1998 Models of General Motors Corporation and Its Several Marques Were Circa 3 Years, 4 Years, ..., and 7 Years of Age," November 2006, Auto on Info, "The 2006 Updates: Toyota Age-Equivalent Estimates: Estimates of When a Typical 1998 Model of Toyota Motor Corporation Will Be as Troublesome as Typical 1998 Models of General Motors Corporation and Its Several Marques Were Circa 3 Years, 4 Years, ..., and 7 Years of Age," November 2006, Auto on Info and "True Value Estimates of GM's 2007 Vehicles," November 2006, Auto on Info. Source of Reliability Score averages: Auto on Info data banks Related Web Pages True Value Estimates of 2007 Big 3 Vehicles Roster of 300,000+ Mile Vehicles Auto Durability Information Page 8 Auto Durability Information Page 7 Auto Durability Information Page 6 Auto Durability Information Page 5 Auto Durability Information Page 4 Auto Durability Information Page 3 Auto Durability Information Page 2 Auto Durability Information Page 1 Related News Articles December 2006: Filling the Quota at the Consumer's Expense? How CR's 1998 GM Recommendations Fared November 2006: True Value Estimates of GM's 2007 Vehicles November 2006: The 2006 Updates: Honda Age-Equivalent Estimates: Estimates of When a Typical 1998 Model of Honda Motor Company Will Be as Troublesome as Typical 1998 Models of General Motors Corporation and Its Several Marques Were Circa 3 Years, 4 Years, ..., and 7 Years of Age November 2006: The 2006 Updates: Toyota Age-Equivalent Estimates: Estimates of When a Typical 1998 Model of Toyota Motor Corporation Will Be as Troublesome as Typical 1998 Models of General Motors Corporation and Its Several Marques Were Circa 3 Years, 4 Years, ..., and 7 Years of Age October 2006: The 2006 Updates: Toyota and Honda Account for 4 of 5 Most Durable Sport-Utility Vehicles; General Motors - 7 of 10 Worst: Will a Typical 1998 Toyota SUV Be More Trouble Free at 21 Years of Age Than a Typical 1998 GM SUV at 3? October 2006: The 2006 Updates: Toyota Tops in Pickup Reliability and Durability: Just How Bad, or Disastrous, Are GM Pickups? October 2006: The 2006 Updates: Toyota and Honda Account for 4 Most Durable Vehicle Lines; General Motors - 4 of 10 Worst: Will a Typical Toyota or Honda 1998 Model Be More Trouble Free at 20 Years of Age Than a Typical 1998 GM Model at 3? September 2006: Toyota and Honda Account for Two Best Minivans; General Motors Accounts for 5 of 8 Worst September 2006: Reliability Updates: Toyota and Honda Still Tops, But Lose Luster; General Motors Still Worst of Major Auto Manufacturers; Hyundai Clobbers GM Yet Again September 2006: Reliability Updates: Best and Worst Cars and Trucks Tables: A Chart Summary August 2006: Reliability Updates: For Vehicles 6-to-8 Years Old, Toyota Accounts for 7 of 10 Best, GM - 17 of 36 Worst August 2006: Reliability Updates: For Vehicles 5-to-7 Years Old, Toyota Accounts for 9 of 13 Best, GM - 17 of 42 Worst August 2006: Reliability Updates: For Vehicles 4-to-6 Years Old, Toyota Accounts for 8 of 14 Best, GM - 19 of 47 Worst August 2006: Reliability Updates: For Vehicles 3-to-5 Years Old, Toyota Accounts for 13 of 15 Best, GM - 17 of 47 Worst August 2006: Reliability Updates: For Model Year 2002, Toyota Accounts for 11 of 16 Best, GM - 16 of 53 Worst Related Mini-Surveys A Toyota Owner Survey with Enquiries into Reliability Importance A Honda Owner Survey with Enquiries into Reliability Importance A Toyota Owner Satisfaction Poll with Enquiries into Toyota Durability A Lexus Owner Satisfaction Poll with Enquiries into Lexus Durability An Infiniti Owner Satisfaction Poll with Enquiries into Infiniti Durability The True Value of a Big Three Big Three Bin Readiness General Motors Travails and Prospects Is the Ownership of a General Motors Vehicle a Useful Index of 21st-Century Cognitive Uselessness?	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