Car Brands - 7 Best Brands of MY 2004

The 7 Most Reliable and Durable Car Brands of Model Year 2004

This page lists the top seven car brands (as well as the Top 10 and Top 15 car brands) of model year 2004 by reliability-and-durability grade point average (Reliability-Durability GPA or more concisely, R-D GPA).

2004's Top 7 Car Brands 

These 7 brand leaders of the automobile industry are listed below in descending order of Reliability-Durability GPA (best first), together with their R-D GPAs.

  • The Honda line, with a R-D GPA of 3.75
  • The Toyota line, with a R-D GPA of 3.68
  • The Lexus line, with a R-D GPA of 3.63
  • The Scion line, with a R-D GPA of 3.39
  • The Acura line, with a R-D GPA of 3.33
  • The Infiniti line, with a R-D GPA of 3.24
  • The Mitsubishi line, with a R-D GPA of 3.20
Chart of the 7 Best Car Brands of 2005

The following bar graph depicts how much above average the Top 7 car brands of 2005 are. The 7 best are listed in descending order (best first).

This is a bar graph of the Reliability-Durability GPAs of the 7 best car brands of model year 2004. The Reliability-Durability GPA of a car model is a composite measure based on the category and overall reliability ratings of Consumer Reports for age ranges 4-to-5 years and 5-to-6 years. Brand R-D GPA is an average of model R-D GPAs. Chart by James Benjamin Bleeker, 20 February 2012.
 
Countries of Origin of the 7 Best Car Brands of 2004
 
Japanese-engineered car brands account for all 7 of the 7 best brands in 2004.

As in in 1985, 1986, and 2005, none of the Detroit 3 manufacturers has a car brand among the Top 7 of 2004.

The following chart gives each nation's percent share of the 7 most reliable and durable brands of 2004.

This is a pie chart of each country's share of the Top 7 automobile brands of model year 2004 by Reliability-Durability Grade Point Average (GPA). Japan has 100% of the best. The Reliability-Durability GPA of a car model is a composite score based on the category and overall reliability ratings of Consumer Reports for age ranges 4-to-5 years and 5-to-6 years. Brand R-D GPA is an average of model R-D GPAs. Chart by James Benjamin Bleeker, 20 February 2012.
 
The Next 3 Car Brands of 2004

The next 3 car brands are listed below in descending order of Reliability-Durability GPA (best first).

  • The Subaru line, with a Reliability-Durability GPA of 2.74
  • The Hyundai line, with a Reliability-Durability GPA of 2.70
  • The Mazda line, with a Reliability-Durability GPA of 2.65

Noteworthy is the quality improvement of the Hyundai brand, from 3rd worst in 1986 to ninth best in 2004.

The Next 5 Car Brands of 2004

The next 5 car brands are listed below in descending order of Reliability-Durability GPA (best first).

  • The BMW line, with a Reliability-Durability GPA of 2.34
  • The Buick line, with a Reliability-Durability GPA of 2.30
  • The Volvo line, with a Reliability-Durability GPA of 2.23
  • The Pontiac line, with a Reliability-Durability GPA of 2.20
  • The Nissan line, with a Reliability-Durability GPA of 2.08
Chart of the 15 Best Car Brands of 2004

The following bar graph depicts how much above average the Top 15 car brands of 2004 are. The 15 best are listed in descending order (best first).

This is a bar graph of the Reliability-Durability GPAs of the 15 worst car brands of model year 2004. The Reliability-Durability GPA of a car model is a composite measure based on the category and overall reliability ratings of Consumer Reports for age ranges 4-to-5 years and 5-to-6 years. Brand R-D GPA is an average of model R-D GPAs. Chart by James Benjamin Bleeker.
 
Note the sizable drop from Mitsubishi to Subaru, and again from Mazda to BMW.
 
Computations

To compute the reliability-durability grade point average of the MY 2004 cars, Consumer Reports' reliability ratings for the age ranges 4-to-5 years and 5-to-6 years are used.

CR's ratings are converted to numerical values following the standard academic pattern: a grade point of 4.0 (an A) is accorded a rating of Much Better Than Average, a 3.0 (a B) is accorded a rating of Better Than Average, a 2.0 (a C) is accorded a rating of Average, a 1.0 (a D) is accorded a rating of Below Average, and a 0 (an F) is accorded a rating of Much Below Average.

Then, for each age range, the grade point of CR's overall reliability rating is weighted 2/3 and the average of the grade points of the category ratings is weighted 1/3.

Then, the average for the two age ranges is taken.

Finally, a car brand's Reliability-Durability GPA is computed by taking the average of the Reliability-Durability GPAs of its models.

Best and Worst Car Brands of Each Model Year

The Best Car Brands of Each Model Year by Reliability-Durability GPA: 1985  1986 ...  2004  2005

The Worst Car Brands of Each Model Year by Reliability-Durability GPA: 1985  1986 ...  2004  2005 

Additional Resources

The Best Cars of Each Model Year by Reliability-Durability GPA: 1975  1976  1977  1978  1979  1980  1981  1982  1983  1984  1985  1986  ...  2004  2005

The Worst Cars of Each Model Year by Reliability-Durability GPA: 1980  1981  1982  1983  1984  1985  1986  ...  2004  2005 

The Best Car Manufacturers of Each Model Year by Reliability-Durability GPA: 1985  1986 ...  2004  2005

The Worst Car Manufacturers of Each Model Year by Reliability-Durability GPA: 1985  1986 ...  2004  2005

Best Car Brands by CR's List of Used Cars to Avoid:  1985  1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006 

Worst Car Brands by CR's List of Used Cars to Avoid:  1985  1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006

Best Car Makers by CR's List of Used Cars to Avoid: 1985  1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006

Worst Car Makers by CR's List of Used Cars to Avoid:  1985  1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006

For additional car quality information, visit www.AutoOnInfo.net and CarsOnInfo.net.

In particular, for additional durability information, see:

http://www.AutoOnInfo.net/SharesOfHighMileageVehicles.aspx 
http://CarsOnInfo.net/ToyotaAgeEquivalents.aspx 
http://CarsOnInfo.net/ToyotaMileageEquivalents.aspx 
http://CarsOnInfo.net/Top25OfAutoonInfosHighMileageRoster.aspx

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