Buick Century - Problems, Statistics, and Analysis

Buick Century owners have reported a total of 1,377 problems for their cars built in the 10 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 Century. The 1999 Buick Century cars have the most problems reported (246 problems).

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

Model Year Number of Problems
  2005 Century
22
  2004 Century
42
  2003 Century
139
  2002 Century
164
  2001 Century
151
  2000 Century
206
  1999 Century
246
  1998 Century
219
  1997 Century
107
  1996 Century
80

  Common problems of Buick Century

The following chart shows the 25 most common problems for Buick Century cars. The number one most common problem is related to the vehicle's engine and engine cooling (200 problems). The second most common problem is related to the vehicle's electrical system (154 problems).

Table 2. Common problems of Buick Century

Problem Category Number of Problems
  Engine And Engine Cooling
200
  Electrical System
154
  Exterior Lighting
151
  Service Brakes
136
  Visibility
116
  Power Train
103
  Steering
87
  Air Bag
67
  Vehicle Speed Control
61
  Seat Belt
44
   
  Structure
43
  Gasoline Fuel System
34
  Unknown Or Other
32
  Suspension
30
  Tire
28
  Equipment
28
  Other Fuel System
17
  Seats
11
  Latches/locks/linkage
8
  Wheel
7
  Electronic Stability Control
7
  Interior Lighting
6
  Air Brake
4
  Parking Brake
2
  Child Seat
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Buick Century 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 Century 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 Century 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 Century Model Years

Century
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2005 2240,05114    
0.04
  2004 4254,70615    
0.05
  2003 139148,27016    
0.06
  2002 164141,81917    
0.07
  2001 151126,28318    
0.07
  2000 206144,49019    
0.08

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Buick Century 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 YearProblems Reported
  2005 Century
1
  2004 Century
5
  2003 Century
8
  2002 Century
20
  2001 Century
10
  2000 Century
20
  1999 Century
22
  1998 Century
32
  1997 Century
14
  1996 Century
12


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