The 10 Worst Automobile Brands in 1975
by James Bleeker
This page provides a ranking of the 10 worst brands of automobiles sold
in North America from model year 1971 to 1974.
Other web pages of this section provide two rankings; however, the numbers
required for the second ranking are not available, that is, they do not
The statistics used in the computations for rating and ranking the brands are those found within the April 1975 issue of Consumer Reports. The section providing the necessary statistics
reliability charts. Reliability is defined by the magazine as the infrequency of serious problems, which it measures annually by a subscriber survey.
The ranking of the car brands is based on the average of the overall reliability ratings of each brand's models.
It provides a measure of how well a brand's models performed over the entire model-quality spectrum.
Auto Brand Quality by the Average of Overall Reliability Ratings: The Bottom 10 of 1975
To compute brand-quality ratings and assemble a brand-quality ranking using Consumer Reports' overall reliability ratings, a number is associated with each rating. A +1.0 is ascribed to a rating of Much Better Than Average, a +0.5 to a rating of Better Than Average, a 0 to a rating of Average, a -0.5 to a rating of Worse Than Average, and a -1.0 to a rating of Much Worse Than Average. Then an average is taken over all of the brand's model years and models offering an overall reliability rating. CR's 1975 overall reliability ratings are found in the
Overall-Record row of its reliability charts.
For this measure of quality, the range is from -1.0 (the worst possible) to +1.0 (the best possible).
The 10 worst car brands by this set of computations, together with their quality ratings, are given in the
bar graph below. Only those brands with at least 5 overall CR reliability ratings are included.
The Bar Graph of the Bottom 10
In the graph that follows, the order of the car brands is with the worst on top.
Summary and Analysis
In 1975, the 10 worst models were, in ascending order (worst first), International
Harvester Company, Volvo, GM's Chevrolet, VW's Audi, GM's Pontiac
(off-loaded in 2009), Saab, Chrysler's Dodge, AMC, Chrysler's Plymouth
(off-loaded in 2001), and Fiat.
To view the 10 Best brand of 1975, click
To view the graphs showing the ratings and rankings of all brands, click
For a Google Knol that summarizes the changes in auto-brand and auto-manufacturer ranking by these quality measures from 1990 to 2010, click
AutoOnInfo.net: The auto-quality website with the
Open Directory Cool Site Award.