The answer to 'why is my vacuum discolored' is that a discolored vacuum is usually caused by normal wear and tear or exposure to dirt, dust, and debris over time. This can lead to the vacuum's exterior becoming stained, faded, or discolored. Some common symptoms include a grimy, dingy, or spotted appearance on the plastic or metal parts of the vacuum.
In most cases, a discolored vacuum is not a sign of a serious problem and can be easily cleaned or restored with some basic maintenance. However, if the discoloration is severe or accompanied by other issues like decreased suction power or mechanical problems, it may be time to consider replacing the vacuum.