2004 Toyota Prius - Problems, Statistics, and Analysis

🔎 Common problems of the 2004 Toyota Prius

735 problems have been reported for the 2004 Toyota Prius. The following chart shows the 24 most common problems for 2004 Toyota Prius. The number one most common problem is related to the vehicle's exterior lighting with 185 problems. The second most common problem is related to the vehicle's electrical system (180 problems).

📈 PPMY Index and Problem Occurrence Trend

In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2004 Toyota Prius in the United States are 47,970 units [1]. If the total number of problems reported by Toyota Prius owners in the last 21 years is 735, and the age of the vehicle is 21, the PPMY index can then be calculated as

      PPMY Index = 735 / 47,970 / 21 * 1000 = 0.73.

For more information, refer to this page: A study of reliability comparison across Toyota Prius model year vehicles.

The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Toyota Prius in 2004.

📊 Compare the 2004 Toyota Prius with Other Model Years

When making the decision between buying a new or used Toyota Prius, the following table can be used to compare the 2004 Toyota Prius with the Toyota Prius from other model years. Note that the number of problems reported for the 2004 Prius is 735 while the average number of problems reported for the 26 model years of the Toyota Prius is 615.

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☘ Prius Service Bulletins

⚑ Prius Safety Recalls

☤ Prius Defect Investigations