Peterbilt 520 — Years to Avoid
Reliability breakdown of every Peterbilt 520 model year. Based on NHTSA owner complaints, federal recalls, and safety investigations.
How we calculate this
Each year receives a composite risk score based on NHTSA owner complaints, federal recalls, safety investigations, and technical service bulletins. Years scoring more than 2x the model's average are flagged as “years to avoid.” Years in the lowest risk bracket are marked as “best years.” All data is sourced from the National Highway Traffic Safety Administration (NHTSA).
Which Peterbilt 520 Years Should You Avoid?
Based on federal safety data, the 2025, 2024, 2021, 2020, 2019, 2018, 2017 Peterbilt 520 are the most problematic years, with significantly higher rates of owner complaints, recalls, and safety investigations compared to other model years.
If you're shopping for a used Peterbilt 520, consider the 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990 model years — these have the fewest reported issues relative to other years.