A lemon is a motor vehicle that has a problem or problems, covered by the warranty, that substantially impairs the use, value, or safety of that vehicle. If you have had problems within the first year or 18,000 miles with your passenger car, light truck (no more than one ton load capacity and not used in business), or motorcycle, you should take it back to the manufacturer or the dealer and ask them to fix it. If they fail to correct the problem(s) after being given a reasonable opportunity to do so, you might own a lemon.