Cadillac Seville - Problems, Statistics, and Analysis

Cadillac Seville owners have reported a total of 539 problems for their cars built in the
9 model years
listed in the chart below.
The chart shows the number of problems reported across all service years for each given model year of the Cadillac Seville.
The 1996 Cadillac Seville cars have the most problems reported (124 problems).

Table 1. Total number of problems by model year for Cadillac Seville

The following chart shows the 23 most common problems for Cadillac Seville cars.
The number one most common problem is related to the vehicle's engine and engine cooling
(118 problems).
The second most common problem is related to the vehicle's electrical system (73 problems).

Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Cadillac Seville of an older model year to newer model years
since older vehicles have been in service longer and thus are expected to have more problems.
In order to compare the reliability across Seville model years, we use the PPMY index which is defined as the
problems reported per thousand vehicles per Year.
A smaller PPMY index indicates greater reliability of the given model year cars.

PPMY = P / S / Y * 1000,

where P = total problems reported during the life of a Cadillac Seville model year;
S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).

The results are shown in Table 3.

Table 3. Use PPMY Index to Compare Reliability Across Seville Model Years

Another way to measure the reliability across the model years of the Cadillac Seville
is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicle's; first service year