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2011 Auto Reliability Ratings and Reliability Rankings

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The Worst Sedans in 2011 by James Bleeker

The worst sedans by the 2011 Auto Reliability Grade Point Average (GPA) are:

Volkswagen AG's V6 turbo-charged Audi A6, a sedan with a 2011 Auto Reliability GPA of 0.33 and Auto Reliability Grade of F over a 3-year auto reliability data history,
General Motors Corporation's V6 Saturn L-Series, a midsize sedan with a 2011 Auto Reliability GPA of 0.63 and Auto Reliability Grade of a low D over a 4-year auto reliability data history,
General Motors' V6 Cadillac STS, a sedan with a 2011 Auto Reliability GPA of 0.75 and Auto Reliability Grade of a low D over a 4-year auto reliability data history,

The Chrysler Sebring Sedan, with a 2011 Auto Reliability GPA of 0.79 and Auto Reliability Grade of a low D over a 8-year auto reliability data history,
The 4-cylinder, front-wheel-drive Volkswagen Passat, a sedan with a 2011 Auto Reliability GPA of 0.81 and Auto Reliability Grade of a low D over a 10-year auto reliability data history,
General Motors' V6 Chevrolet Impala, a sedan with a 2011 Auto Reliability GPA of 0.81 and Auto Reliability Grade of a low D over a 10-year auto reliability data history.

GM accounts for 3 of the worst sedans in 2011, Volkswagen - 2, and Chrysler - 1. Five of the above sedans have a reliability grade of D; one has a reliability grade of F.

These sedans are among the Bottom 30 automobiles offering 3 or more model years of reliability data in 2011.

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. A Grade Point Average (GPA) is an average of the Grade Points and is computed using Microsoft's Average(a:b,[c:d],...) function. The above 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 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.

Additional resources: Best Family Cars in 2011 and Best Luxury Cars in 2011

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