Buick Rainier - Problems, Statistics, and Analysis

Buick Rainier owners have reported a total of 474 problems for their cars built in the 5 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 Rainier. The 2004 Buick Rainier cars have the most problems reported (178 problems).

Table 1. Total number of problems by model year for Buick Rainier

Model Year	Number of Problems
2007 Rainier	45
2006 Rainier	111
2005 Rainier	139
2004 Rainier	178
2003 Rainier	1

🔍 Common problems of Buick Rainier

The following chart shows the 21 most common problems for Buick Rainier cars. The number one most common problem is related to the vehicle's electrical system (140 problems). The second most common problem is related to the vehicle's fuel system, gasoline (56 problems).

Table 2. Common problems of Buick Rainier

Problem Category	Number of Problems
Electrical System	140
Gasoline Fuel System	56
Exterior Lighting	51
Other Fuel System	32
Power Train	24
Engine And Engine Cooling	20
Visibility	20
Suspension	20
Equipment	18
Air Bag	17

Vehicle Speed Control	17
Electronic Stability Control	13
Service Brakes	11
Steering	9
Structure	7
Latches/locks/linkage	5
Seat Belt	4
Seats	3
Interior Lighting	3
Tire	3
Unknown Or Other	1

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Buick Rainier 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 Rainier 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 Rainier 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.

Table 3. Use PPMY Index to Compare Reliability Across Rainier Model Years

Rainier Model Year	Problems	Sales [1]	Vehicle Age	PPMY Index
2007	45	5,409	18	0.46
2006	111	13,774	19	0.42
2005	139	13,648	20	0.51
2004	178	28,971	21	0.29

📊 Number of Problems Reported During the First Year

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

Table 4. Number of problems in vehicle's; first service year

Model Year	Problems Reported
2006 Rainier	3
2005 Rainier	6
2004 Rainier	16

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