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10 Worst Auto Brands in 2011 by James Bleeker

The ten worst automobile brands by the 2011 Auto Reliability Grade Point Average (GPA) are:

General Motors Corporation's Hummer brand, with an overall 2011 Auto Reliability GPA of 0.42 and Auto Reliability Grade of F,
Daimler AG's Smart ForTwo brand, with an overall 2011 Auto Reliability GPA of 0.50 and Auto Reliability Grade of D,
BMW AG's Mini Cooper brand, with an overall 2011 Auto Reliability GPA of 0.95 and Auto Reliability Grade of D,
Chrysler LLC's Dodge brand, with an overall 2011 Auto Reliability GPA of 1.04 and Auto Reliability Grade of D,
General Motors Corporation's Saturn brand, with an overall 2011 Auto Reliability GPA of 1.13 and Auto Reliability Grade of D,
Chrysler LLC's Jeep brand, with an overall 2011 Auto Reliability GPA of 1.13 and Auto Reliability Grade of D,
Volkswagen AG's Audi brand, with an overall 2011 Auto Reliability GPA of 1.14 and Auto Reliability Grade of D,
General Motors Corporation's Cadillac brand, with an overall 2011 Auto Reliability GPA of 1.21 and Auto Reliability Grade of D,
General Motors Corporation's Chevrolet brand, with an overall 2011 Auto Reliability GPA of 1.25 and Auto Reliability Grade of D,
General Motors Corporation's GMC brand, with an overall 2011 Auto Reliability GPA of 1.27 and Auto Reliability Grade of D.

General Motors Corporation accounts for 5 of the 10 worst brands in 2011; Chrysler LLC - another 2. Together, GM and Chrysler account for 7 of the ten worst. By location of corporate headquarters, the U.S. accounts for 7 of the Bottom 10 brands; Germany - the remaining 3.

To view the Auto Reliability GPAs and Grades of all of the major brands in North America, click here.

The method of computation of the GPAs is probably familiar to nearly every college, technical school, and high school student. A Grade Point of 4.00 (that is, an A) is given to a Consumer Reports "Much Better Than Average" rating, a GP of 3.00 (that is, a B) is given to a CR "Better Than Average" rating, a GP of 2.00 (that is, a C) to an "Average" rating, a GP of 1.00 (that is, a D) to a "Worse Than Average" rating, and a GP of 0.00 (that is, an F) to a "Much Worse Than Average" rating. The Grade Point Average (GPA) of an automobile model is an average of the Grade Points and is computed using Microsoft's Average(a:b,[c:d],...) function. These GPAs are the Average GPAs given in the table "The Updated 2011 Motor Vehicle Reliability Grade Point Averages (GPAs) and Grades with Reliability GPAs for Four 4-Year Age Ranges and an Overall Average Reliability GPA" on the Updated Auto Reliability Grade Point Averages and Grades page. The GPAs of auto brands are the average of its model GPAs.

The sources for Consumer Reports' ratings are the reliability tables in (1) the April 2011 issue of Consumer Reports, (2) Consumer Reports New Car Buying Guide: 2011, and (3) Consumer Reports Used Car Buying Guide: 2011.

Consumer Reports defines reliability as the infrequency of reported serious problems.

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