You've scored a great deal on your car rental by checking discount codes and diligently comparing rates. Don't pat yourself on the back just yet though. As many people find out at the rental counter, that may be only half the battle.
Are you traveling with small children? If so, you may need one or more car seats to keep them secure. Not familiar with the local area? A GPS navigation system might be important. These add-ons may add extra charges to your rental. In some cases, these charges may even end up costing more than the time and mileage charges for the rental itself.
Here are a few strategies to avoid or minimize the cost of rental options: