179 problems have been reported for the 2004 Nissan 350Z. The following chart shows the 22 most common problems for 2004 Nissan 350Z. The number one most common problem is related to the vehicle's tires with 33 problems. The second most common problem is related to the vehicle's suspension (32 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 Nissan 350Z in the United States are 40,370 units [1]. If the total number of problems reported by Nissan 350Z owners in the last 21 years is 179, and the age of the vehicle is 21, the PPMY index can then be calculated as
PPMY Index = 179 / 40,370 / 21 * 1000 = 0.21.
For more information, refer to this page: A study of reliability comparison across Nissan 350Z model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Nissan 350Z in 2004.
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When making the decision between buying a new or used Nissan 350Z, the following table can be used to compare the 2004 Nissan 350Z with the Nissan 350Z from other model years. Note that the number of problems reported for the 2004 350Z is 179 while the average number of problems reported for the 7 model years of the Nissan 350Z is 114.