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During the 20th century, the chemistry of the automobile environment throughout the world has changed dramatically. As a result of these changes, the corrosivity of the automobile environment has increased (see effects of acid rain on automotive coatings). The following milestones illustrate how the corrosion of automobiles has progressed during that period in North America.
During the 1980s and into the early 90s, significant advances have been made in understanding automobile with regards to:
The development of new and improved materials and processes has led to tremendous advances in automobile corrosion resistance. Structural corrosion problems have been dramatically reduced since the early 1980s through (reference):
