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Reliability Drops Some, But Toyota-GM Gap Remains Near Record
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Toyota
Reliability Drops Some, But Toyota-GM Gap Remains Near Record
Auto on Info May 2007
Toyota Reliability Drops Some, But Toyota-GM Gap Remains Near Record
By James B. Bleeker
The 2007 Reliability Index average of Toyota Motor Corporation is .66, compared with .74 in 2006 and .62 in 2005. The Reliability Index averages of its Lexus and Toyota lines are nearly identical - .65 for the Lexus marque and .66 for the Toyota marque.
The Lexus line average declined considerably in 2007 - from .86 to .65. The drop is partly a result of the very low 2007 Reliability Index value of the Lexus LX (relative to those of other Lexus models) at .32, which contrasts sharply with that of the Toyota Land Cruiser (its less upscale cousin) at .68. The drop is also likely partly a result of the changed categories in Consumer Reports' reliability tables, upon which the Reliability Index is based. See Methodology.
The Reliability Index averages of Honda Motor Company's Acura line and Nissan Motor Company's Infiniti line are similar to those of Toyota's lines - .65 for the Acura marque and .66 for the Infiniti marque.
Honda's Honda line has a 2007 Reliability Index average of .51; however, if the Passport - a rebadged product by Isuzu Motors Ltd., an affiliate of General Motors Corporation (with a Reliability Index average of -.18) - is excluded, Honda's Honda line would have a 2007 Reliability Index average for its own engineered vehicles of .69, an average exceeding that of any other marque.
The Reliability Index values and averages are based on the paucity of reported serious problems for vehicles between the ages of 6 and 8 years. Consequently, the 2007 Reliability Index values and averages use the reported performance of vehicles from manufacturing years 1999 and 2000.
The following chart depicts Toyota Motor Corporation's Reliability Index average history and an extrapolation of the averages to the 2007-2008 pair of manufacturing years.
At the other end of the spectrum, General Motors Corporation's reliability, relative to that of Toyota as measured by the gap from Toyota's Reliability Index average to General Motors' Reliability Index average, is -.84, compared with -.92 in 2006 and -.83 in 2005. A history of these gaps, together with an extrapolation to the 2011-2012 pair of manufacturing years, is depicted in the next chart.
As the maximum depth that the gap - between Toyota's, or Honda's, Reliability Index average and that of GM - can descend is -2.0 (as the index's range is from -1 to +1), in 2007 GM remains nearly half-way to the bottom.
The history and extrapolation of the Toyota-Chrysler Reliability Index gaps, depicted next, also suggest that those hoping for products from the Chrysler Group of a reliability comparable to that of the products of Toyota or Honda had best pray for divine intervention.
The history and extrapolation of the Toyota-Ford Reliability Index gap offers a tad more hope for products by Ford Motor Company.
The last chart depicts the history and extrapolation of the Toyota-Big Three gap.
Source for the 2007 Reliability Index averages: Table I
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