There are several products on the market that can be used to repair dents. Some of these products are safer to use on your car than others. Taking a car to the mechanic is always expensive, but always a sure way to get the dent removed properly. Some dents can be removed very easily and inexpensively from the comforts of home. Grab that plunger out of the bathroom and put it to good use.
Clean and dry the dent.
Position the plunger over the dent. Pump the plunger a couple of times. This allows the plunger to create suction. Pull slightly on the plunger to determine the amount of suction created. The greater the suction generated, the better chance of this technique working.
Pull on the plunger. Don't be afraid to pull hard. Metal needs to be manipulated, so be unyielding.
If you aren't successful the first time, repeat.
The plunger is safe and won't damage the can any worse than it already is. The dent can be a little larger than the plunger.
Dents that are creased cannot be removed with a plunger.