242 problems have been reported for the 2004 Chevrolet Corvette. The following chart shows the 21 most common problems for 2004 Chevrolet Corvette. The number one most common problem is related to the vehicle's fuel system, gasoline with 89 problems. The second most common problem is related to the vehicle's fuel system, other (57 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 Chevrolet Corvette in the United States are 33,501 units [1]. If the total number of problems reported by Chevrolet Corvette owners in the last 20 years is 242, and the age of the vehicle is 20, the PPMY index can then be calculated as
PPMY Index = 242 / 33,501 / 20 * 1000 = 0.36.
For more information, refer to this page: A study of reliability comparison across Chevrolet Corvette model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Chevrolet Corvette in 2004.
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When making the decision between buying a new or used Chevrolet Corvette, the following table can be used to compare the 2004 Chevrolet Corvette with the Chevrolet Corvette from other model years. Note that the number of problems reported for the 2004 Corvette is 242 while the average number of problems reported for the 29 model years of the Chevrolet Corvette is 187.