This site provides difficult-to-find car quality information. Its focus is on providing joint measures of reliability and durability.
The first reliability-durability measure is the Reliability-Durability Grade Point Average - the Reliability-Durability GPA or more simply the R-D GPA. This measure is the more refined measure and offers a more precise measure of automobile quality.
The second reliability-durability measure examines shares of Consumer Reports' Used Cars to Avoid for each of the model years.
Both measures look at frequency of reported car problems when the cars are in the age range 5-to-6 years old.
Site creator and manager is James B. Bleeker. All questions and comments are welcomed. To comment or to request pages on other measures of car quality, please send your emails to [email protected].
Note: Although there are usually no more than two charts per page, you may have to click the refresh button several times to bring up the chart(s).
Other websites created and managed by James Bleeker are:
Kindle Ebooks by James B. Bleeker include:
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AutoOnInfo.net’s Car Quality Series, Volume 3: Car Guide and Shopping Companion: The 2012 Reliability GPAs and Grades of the 6-to-10-Year-Old Cars and Trucks from Model Years 2002 to 2005
Volume 3 of AutoOnInfo.net’s Car Quality Series offers quality ratings on car and truck models, brands, and manufacturers using Auto Reliability Grade Point Averages (GPAs) and Grades. With these measures of performance, this e-guide brings to the aid of auto consumers a convenient, anywhere, anytime source of automobile information on enduring reliability. As a further aid, this book provides graphs depicting both automobile brand and manufacturer spectral signatures and density functions.
Ratings and rankings of vehicle models, brands, and manufacturers are for North American model years 2002 to 2005 when the cars and trucks were between the ages of 6 and 10 years old. Used car buyers may use the Reliability GPAs and Grades as a valuable shopping tool for earlier and later model years as well. New car buyers looking for models and lines that have withstood the test of time may use the GPAs and grades as a guide for what runs well over a multi-year time span. |
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AutoOnInfo.net's Car Quality Series, Volume 2: Brand Quality for Model Years 1985 to 2006 and Effect on Brand Market Shares from 1985 to 2009
This volume of AutoOnInfo.net’s car guide series offers consumers and researchers an historical summary of the reliability and durability of car and truck brands and examines how these brands have fared in their U.S. market shares. It uses 6-year-old model entries in Consumer Reports’ Used Car to Avoid – also termed Vehicles to Avoid and Worst Cars, Year by Year – and CR’s reliability charts to ascribe quality grades to automobile brands for model-year groups 1985 to 1989, 1990 to 1994, 1995 to 1999, 2000 to 2004, 2005 to 2006, and 1985 to 2006. In addition to ascribing quality grades to each brand, it provides a chart that plots the number of the brand’s 6-year-old model entries in CR’s vehicles to avoid. To examine the effect that a brand’s reliability and durability has had on sales, two or more charts depicting the brand’s U.S. market shares for calendar years 1985 to 2009 are given. These grades and charts and the author’s comments impart an historical perspective that sheds light on the present condition of surviving vehicle lines and their future prospects, individual and institutional shortcomings, and what effect these may have on the U.S. |
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AutoOnInfo.net's Car Guide and Shopping Companion: The 2009 Reliability GPAs and Grades of the 6-to-10-Year-Old Cars and Trucks from Model Years 1999 to 2002
AutoOnInfo.net’s Car Guide offers quality ratings on car models, brands, and manufacturers using Auto Reliability Grade Point Averages (GPAs) and Grades. With this guide, GPAs and grades, familiar by common-place use in educational settings, are brought to the aid of car consumers seeking a convenient, any-where, any-time source of automobile information on enduring reliability. Car models rated are from North American model years 1999 to 2002 when the cars were between the ages of 6 and 10 years old. Used car buyers may use the Reliability GPAs and grades as a valuable shopping tool for earlier and later model years as well. New car buyers looking for models and lines that have withstood the test of time may use the GPAs and grades as a guide for what runs well over a multi-year time span. Motor vehicles graded and ranked include convertibles, coupes, sedans, wagons, hatchbacks, minivans, SUVs, and pickup trucks. |
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