256 problems have been reported for the 2004 Volvo S60. The following chart shows the 21 most common problems for 2004 Volvo S60. The number one most common problem is related to the vehicle's engine and engine cooling with 83 problems. The second most common problem is related to the vehicle's fuel system, other (29 problems).
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 Volvo S60 in the United States are 42,535 units [1]. If the total number of problems reported by Volvo S60 owners in the last 20 years is 256, and the age of the vehicle is 20, the PPMY index can then be calculated as
PPMY Index = 256 / 42,535 / 20 * 1000 = 0.30.
For more information, refer to this page: A study of reliability comparison across Volvo S60 model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Volvo S60 in 2004.
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When making the decision between buying a new or used Volvo S60, the following table can be used to compare the 2004 Volvo S60 with the Volvo S60 from other model years. Note that the number of problems reported for the 2004 S60 is 256 while the average number of problems reported for the 25 model years of the Volvo S60 is 62.