5 problems have been reported for the 2005 Infiniti Q45. The following chart shows the 5 most common problems for 2005 Infiniti Q45. The number one most common problem is related to the vehicle's air bags with 1 problem. The second most common problem is related to the vehicle's tires (1 problem).
| Problem Category | Number of Problems |
|---|---|
| Air Bag | |
| Tire | |
| Seats | |
| Electrical System | |
| Vehicle Speed Control |
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 Infiniti Q45 in the United States are 1,724 units [1]. If the total number of problems reported by Infiniti Q45 owners in the last 17 years is 5, and the age of the vehicle is 17, the PPMY index can then be calculated as
PPMY Index = 5 / 1,724 / 17 * 1000 = 0.17.
For more information, refer to this page: A study of reliability comparison across Infiniti Q45 model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2005 Infiniti Q45 in 2005.
| Service Year | Number of Problems |
|---|---|
| 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 Infiniti Q45, the following table can be used to compare the 2005 Infiniti Q45 with the Infiniti Q45 from other model years. Note that the number of problems reported for the 2005 Q45 is 5 while the average number of problems reported for the 10 model years of the Infiniti Q45 is 13.