Cadillac Deville owners have reported a total of 1,979 problems for their cars built in the 10 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 Deville. The 1997 Cadillac Deville cars have the most problems reported (258 problems).
The following chart shows the 26 most common problems for Cadillac Deville cars. The number one most common problem is related to the vehicle's electrical system (349 problems). The second most common problem is related to the vehicle's engine and engine cooling (340 problems).
|Problem Category||Number of Problems|
|Engine And Engine Cooling|
|Gasoline Fuel System|
|Vehicle Speed Control|
|Other Fuel System|
|Unknown Or Other|
|Electronic Stability Control|
|Traction Control System|
It would not be fair to compare the Cadillac Deville 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 Deville 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 Deville 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.
Another way to measure the reliability across the model years of the Cadillac Deville is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.
|Model Year||Problems Reported|