8 easy ways to boost your car's value

If your car's worth more than $40,000 or so, it may be worth paying professional auto detailers to clean and polish it thoroughly. ("Detailing" just means "cleaning obsessively.")

With a car like this, the difference between super-clean and dirty could be thousands of dollars, so it will be worth paying to have the work done right, said Lauren Fix of the Car Care Council.

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