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The Updated 2011 Reliability Grade Point Averages and Grades for Manufacturers of Automobiles: The Complete Table
and the Top 5 Automobile Manufacturers and the Bottom
5 Automobile Manufacturers
by James Bleeker
Photograph of a 2010 2-door Toyota Yaris on 11 August 2011
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With an overall 2011 Auto Reliability Grade Point
Average of a perfect 4.00 over a 4-year data history (a
perfect 4.00 over an 8-year data history, if its
predecessor, the Toyota Echo, is included), the Toyota Yaris
continues to contribute to Toyota Motor Corporation's
high overall Grade Point Averages. See the
table, bar graph, and list of the Top 5 below.
The 2010 Toyota Yaris came in the following editions:
2-door hatchback, 4-door hatchback, and 4-door sedan. |
The Complete Table
This page provides detailed 2011 auto manufacturer
reliability ratings and auto manufacturer reliability rankings. It
expresses the automobile manufacturer reliability ratings and automobile
manufacturer reliability
rankings, and makes available manufacturer reliability comparisons and
reliability contrasts, using the Auto Reliability Grade Point Average, or
Auto Reliability GPA. This auto reliability index is valuable as it is an
easy-to-understand, but detailed, auto reliability measure, and is familiar
to many having attended secondary school and nearly all who have received
some post-secondary education. The page also employs Auto Reliability Grades
as a reliability index. This measure of auto reliability differences,
although less detailed, is valuable as it is familiar to all persons having
attended primary school. The updated Auto Reliability GPA is an automobile
reliability statistic that is obtained from Consumer Reports' auto
reliability survey data summarized in the reliability tables of (1) Consumer Reports: New Car Buying Guide: 2011,
(2) Consumer Reports: Used Car Buying Guide: 2011, and
(3) the April 2011 issue of the Consumer Reports magazine. Column
reordering on this page is Ajax
enabled to make for a convenient and easy-to-use reordering option.
The Average
GPA for each car manufacturer is the average of the
Average GPAs of its models. The Average
Minimum GPA for each car manufacturer is the average of the
Minimum GPAs of its models. The Reliable
Two, Toyota Motor Corporation and Honda Motor Company, appear first in the
table, because of their rather singular stature; the remaining manufacturers
are listed alphabetically.
Letter grades corresponding to Average GPAs and Average Minimum GPAs are determined thusly: A if the GPA is 3.50 to
4.00, B if the GPA is 2.50 to 3.49, C if the GPA is 1.50 to 2.49, D if
the GPA is 0.50 to 1.49, and F if the GPA < 0.50.
GPAs for 4 age ranges are given so that the visitor may
examine more thoroughly the age range that is of greater interest to
him/her, if such there be.
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The Updated 2010 Reliability Grade Point
Averages for Manufacturers of Motor Vehicles
with Reliability GPAs for Four 4-Year Age Ranges
and an Overall Average Reliability GPA
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ID |
Auto Manufacturer |
Line GPA for 0-to-4 Year Old Vehicles |
Line GPA for 2-to-6 Year Old Vehicles |
Line GPA for 4-to-8 Year Old Vehicles |
Line GPA for 6-to-10 Year Old Vehicles |
Average GPA |
Grade Based on Average GPA |
Average Minimum GPA |
Grade Based on Average Minimum GPA |
Average Number of Model Years of Data |
44 |
Toyota |
3.11 |
3.55 |
3.62 |
3.66 |
3.44 |
B |
3.09 |
B |
6.6 |
68 |
Honda |
3.34 |
3.52 |
3.52 |
3.38 |
3.47 |
B |
3.22 |
B |
6.7 |
84 |
BMW |
1.28 |
1.63 |
1.72 |
1.63 |
1.30 |
D |
0.99 |
D |
5.8 |
119 |
Chrysler |
1.04 |
1.08 |
1.21 |
1.26 |
1.15 |
D |
0.85 |
D |
5.5 |
134 |
Daimler |
1.38 |
1.48 |
1.88 |
2.31 |
1.36 |
D |
1.01 |
D |
4.6 |
187 |
Ford |
2.25 |
2.10 |
2.08 |
1.93 |
2.14 |
C |
1.84 |
C |
5.9 |
263 |
General Motors |
1.49 |
1.24 |
1.34 |
1.46 |
1.35 |
D |
1.04 |
D |
5.5 |
276 |
Hyundai |
2.52 |
2.47 |
2.29 |
1.69 |
2.38 |
C |
2.05 |
C |
5.5 |
279 |
Isuzu |
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1.50 |
1.50 |
C |
1.50 |
C |
2.0 |
285 |
Jaguar |
1.00 |
2.00 |
2.00 |
1.83 |
1.46 |
D |
1.42 |
D |
2.3 |
297 |
Kia |
2.41 |
1.98 |
1.38 |
1.04 |
2.04 |
C |
1.73 |
C |
3.8 |
301 |
Land Rover |
2.00 |
1.50 |
1.00 |
|
1.50 |
C |
1.50 |
C |
1.5 |
315 |
Mazda |
2.35 |
2.13 |
2.38 |
2.14 |
2.15 |
C |
1.73 |
C |
6.2 |
322 |
Mitsubishi |
2.83 |
2.83 |
2.50 |
2.35 |
2.61 |
B |
2.35 |
C |
2.8 |
349 |
Nissan |
2.28 |
2.25 |
2.24 |
2.19 |
2.26 |
C |
1.93 |
C |
5.8 |
355 |
Porsche |
2.17 |
2.58 |
2.00 |
1.89 |
2.23 |
C |
1.75 |
C |
4.5 |
364 |
Subaru |
2.85 |
2.86 |
2.69 |
2.15 |
2.63 |
B |
2.11 |
C |
7.6 |
367 |
Suzuki |
2.67 |
2.50 |
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2.58 |
B |
2.50 |
B |
3.0 |
391 |
Volkswagen |
1.62 |
1.27 |
0.77 |
1.00 |
1.23 |
D |
0.85 |
D |
3.9 |
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The following bar graph depicts the 2011 Auto Reliability GPAs
of the above automobile manufacturers.

There are several important points to be noted from the above
bar graph. The first is that the 2011 Auto Reliability GPAs of
Toyota Motor Corporation and Honda Motor Company are much higher
than the 2011 Auto Reliability GPA of any other manufacturer.
The second is that Hyundai Motor Company has distanced itself
from Ford Motor Company. The third is that the 2011 Auto
Reliability GPA of the Ford Motor Company is much higher than
those of its Detroit brethren - General Motors Corporation and
Chrysler LLC. The fourth is that Hyundai Motor Company continues to
move up, placing 6th in 2011, versus 10th in 2010.
The 2011 Top 5 Automobile Manufacturers
Next, we list the 5 most reliable automobile manufacturers. The
2011 Top Five auto manufacturers are:
Honda Motor Company, with an overall 2011 Auto Reliability GPA of 3.47,
Toyota Motor Corporation, with an overall 2011 Auto Reliability GPA of 3.44,
Fuji Heavy Industries Ltd. (Subaru), with an overall 2011 Auto Reliability GPA of 2.63,
Mitsubishi Motors Corporation, with an overall 2011 Auto Reliability GPA of 2.61,
Suzuki Motor Corporation, with an overall 2011 Auto Reliability GPA of 2.58.
Note that Fuji Heavy Industries, Ltd. is a distant third, and
that Fuji, Mitsubishi Motors Corporation, and Suzuki Motor
Corporation all have similar 2011 Auto Reliability GPAs.
The 2011 Bottom 5 Automobile Manufacturers
Next, we list the 5 least reliable automobile manufacturers. The 2011 Bottom
Five auto manufacturers are:
Chrysler LLC, with an overall 2011 Auto Reliability GPA of 1.15,
Volkswagen AG, with an overall 2011 Auto Reliability GPA of 1.23,
BMW AG, with an overall 2011 Auto Reliability GPA of 1.30,
General Motors Corporation, with an overall 2011 Auto Reliability GPA of 1.35,
Daimler AG, with an overall 2011 Auto Reliability GPA of 1.36.
Note that both of Ford Motor Company's Detroit brethren,
General Motors Corporation and Chrysler LLC, remain in the
Bottom 5. Also note that Chrysler dropped to worst and that GM's GPA is unchanged from
that of last year.
Disclosure |
Site manager is currently a
very small shareholder of Ford Motor Company (2011-08-12). I am not,
and have not been, a
shareholder of any other motor vehicle manufacturer. |
Note |
Although this site was created using software by Microsoft,
you may encounter difficulty in downloading a PDF file from this
page using
Internet Explorer. However, with Mozilla Firefox, there should
be no difficulty, and the download should be speedy. |
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.
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