2021 Ford Mustang - Problems, Statistics, and Analysis

🔎 Common problems of the 2021 Ford Mustang

68 problems have been reported for the 2021 Ford Mustang. The following chart shows the 17 most common problems for 2021 Ford Mustang. The number one most common problem is related to the vehicle's power train with 10 problems. The second most common problem is related to the vehicle's fuel system, gasoline (10 problems).

Table 1. Common problems of the 2021 Ford Mustang

📈 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 2021 Ford Mustang in the United States are 49,616 units [1]. If the total number of problems reported by Ford Mustang owners in the last 5 years is 68, and the age of the vehicle is 5, the PPMY index can then be calculated as

      PPMY Index = 68 / 49,616 / 5 * 1000 = 0.27.

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

The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Ford Mustang in 2021.

Table 2. PPMY Index and Problem Occurrence Trend

Service Year Number of Problems
  2026
5
  2025
19
  2024
9
  2023
15
  2022
11
  2021
9

📊 Compare the 2021 Ford Mustang with Other Model Years

When making the decision between buying a new or used Ford Mustang, the following table can be used to compare the 2021 Ford Mustang with the Ford Mustang from other model years. Note that the number of problems reported for the 2021 Mustang is 68 while the average number of problems reported for the 30 model years of the Ford Mustang is 314.

Table 3. Compare the 2021 Ford Mustang with other model years

Model Year Number of Problems
  2025 Mustang
11
  2024 Mustang
103
  2023 Mustang
28
  2022 Mustang
60
  2021 Mustang
68
  2020 Mustang
154
  2019 Mustang
172
  2018 Mustang
212
  2017 Mustang
311
  2016 Mustang
464
  2015 Mustang
609
  2014 Mustang
421
  2013 Mustang
322
  2012 Mustang
569
  2011 Mustang
571
  2010 Mustang
288
  2009 Mustang
203
  2008 Mustang
376
  2007 Mustang
692
  2006 Mustang
635
  2005 Mustang
997
  2004 Mustang
132
  2003 Mustang
206
  2002 Mustang
185
  2001 Mustang
241
  2000 Mustang
382
  1999 Mustang
251
  1998 Mustang
294
  1997 Mustang
202
  1996 Mustang
280


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