Buick Terraza owners have reported a total of 252 problems for their cars built in the 3 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 Buick Terraza. The 2005 Buick Terraza cars have the most problems reported (145 problems).
The following chart shows the 24 most common problems for Buick Terraza cars. The number one most common problem is related to the vehicle's electrical system (52 problems). The second most common problem is related to the vehicle's electronic stability control (34 problems).
|Problem Category||Number of Problems|
|Electronic Stability Control|
|Engine And Engine Cooling|
|Vehicle Speed Control|
|Traction Control System|
|Gasoline Fuel System|
|Unknown Or Other|
|Other Fuel System|
It would not be fair to compare the Buick Terraza 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 Terraza 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 Buick Terraza 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 Buick Terraza 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|