Cadillac STS - Problems, Statistics, and Analysis

Cadillac STS owners have reported a total of 558 problems for their cars built in the 14 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 STS. The 2006 Cadillac STS cars have the most problems reported (189 problems).

🔍 Common problems of Cadillac STS

The following chart shows the 22 most common problems for Cadillac STS cars. The number one most common problem is related to the vehicle's air bags (102 problems). The second most common problem is related to the vehicle's electrical system (85 problems).

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Cadillac STS 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 STS 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 STS 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.

📊 Number of Problems Reported During the First Year

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

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☘ STS Service Bulletins

⚑ STS Safety Recalls

☤ STS Defect Investigations