# 2003 Nissan Altima - Problems, Statistics, and Analysis

## Common problems of the 2003 Nissan Altima

1,056 problems have been reported for the 2003 Nissan Altima.
The following chart shows the 21 most common problems for 2003 Nissan Altima.
The number one most common problem is related to the vehicle's engine and engine cooling
with 563 problems.
The second most common problem is related to the vehicle's structure
(117 problems).

### Table 1. Common problems of the 2003 Nissan Altima

##
PPMY Index and Problem Occurrence Trend

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 2003 Nissan Altima in the United States are 225,702 units [1]. If the total number of problems reported by Nissan Altima owners in the last 15 years is 1056, and the age of the vehicle is 15, the PPMY index can then be calculated as

PPMY Index = 1056 / 225,702 / 15 * 1000 = 0.31.

For more information, refer to this page: A study of reliability comparison across Nissan Altima model year vehicles.

The following chart shows the number of problems reported during each of the service
years since the debut of the 2003 Nissan Altima in 2003.

#### Table 2. PPMY Index and Problem Occurrence Trend

Service Year | Number of Problems |

2003 |
6 |

2004 |
29 |

2005 |
46 |

2006 |
136 |

2007 |
108 |

2008 |
97 |

2009 |
107 |

2010 |
96 |

2011 |
66 |

2012 |
69 |

2013 |
70 |

2014 |
32 |

2015 |
78 |

2016 |
32 |

2017 |
26 |

2018 |
2 |

##
Compare the 2003 Nissan Altima with Other Model Years

When making the decision between buying a new or used Nissan Altima,
the following table can be used to compare the 2003 Nissan Altima
with the Nissan Altima from other model years.
Note that the number of problems reported for the 2003 Altima is 1,056
while the average number of problems reported for the 22 model years of the Nissan Altima is 540.

### Table 3. Compare the 2003 Nissan Altima with other model years