酸雨对汽车面漆的破坏是当前一个严重的问题。这项工作描述了现场蚀刻样品的分析技术以及这些分析的结果。根据这些分析，确定了水斑点和蚀刻的区别。已经开发了实验室试验来模拟现场故障。对一系列标准涂层进行了测试，并将这些测试与选定的暴露位置进行了关联。最后，对最新的抗腐蚀涂层进行了比较。

ACID RAIN DESTRUCTION OF AUTOMOTIVE TOPCOATS IS A SERIOUS CURRENT PROBLEM. THIS WORK DESCRIBES TECHNIQUES OF ANALYSIS OF ETCHED SAMPLES FROM THE FIELD AND THE RESULTS OF THESE ANALYSES. FROM THESE ANALYSES, A DIFFERENTIATION OF WATER SPOTTING AND ETCHING HAS BEEN ESTABLISHED. LABORATORY TESTS HAVE BEEN DEVELOPED TO MIMIC FIELD FAILURES. A SERIES OF STANDARD COATINGS WAS TESTED AND A CORRELATION MADE BETWEEN THESE TESTS AND SELECTED EXPOSURE SITES. FINALLY, A COMPARISON IS MADE OF THE NEWEST AVAILABLE COATINGS WITH IMPROVED ETCH RESISTANCE.