151 problems have been reported for the 2005 Buick Terraza. The following chart shows the 20 most common problems for 2005 Buick Terraza. The number one most common problem is related to the vehicle's electrical system with 39 problems. The second most common problem is related to the vehicle's electronic stability control (22 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 2005 Buick Terraza in the United States are 19,848 units [1]. If the total number of problems reported by Buick Terraza owners in the last 18 years is 151, and the age of the vehicle is 18, the PPMY index can then be calculated as
PPMY Index = 151 / 19,848 / 18 * 1000 = 0.42.
For more information, refer to this page: A study of reliability comparison across Buick Terraza model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2005 Buick Terraza in 2005.
| Service Year | Number of Problems |
|---|---|
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 |
When making the decision between buying a new or used Buick Terraza, the following table can be used to compare the 2005 Buick Terraza with the Buick Terraza from other model years. Note that the number of problems reported for the 2005 Terraza is 151 while the average number of problems reported for the 3 model years of the Buick Terraza is 87.
| Model Year | Number of Problems |
|---|---|
| 2007 Terraza | |
| 2006 Terraza | |
| 2005 Terraza |