International Harvester Conventional Series — Years to Avoid
Reliability breakdown of every International Harvester Conventional Series 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 International Harvester Conventional Series Years Should You Avoid?
The International Harvester Conventional Series shows relatively consistent reliability across model years, with no single year standing out as significantly worse than others.
If you're shopping for a used International Harvester Conventional Series, consider the 1981, 1980, 1979 model years — these have the fewest reported issues relative to other years.