Besides the main auto insurance coverage that you would typically have on your auto insurance policy there are many additional types of coverage that are always optional. These optional types of coverage are usually relatively cheap and they provide you and your property with much more protection. They may not seem to you to be helpful in most circumstances but we never know when we might need these often forgotten types of assistance.The is Gap coverage will pay the difference between the amount you owe on the loan or lease agreements you have with the lender you purchased or leased your vehicle from if the car is totaled in a covered accident. Sometimes this Gap coverage is also referred to as Loan/Lease coverage.Also falling into the category of not always necessary is Towing and Labor or Roadside assistance. The towing and labor portion usually covers the cost to tow your vehicle to a repair facility for repairs or even make minor repairs at the site after a minor accident. The roadside assistance coverage covers towing, minor repairs, fuel delivery, key making, etc., even if there is no auto accident.Auto Rental coverage is when the auto insurance company reimburses you for any cost relating to a replacement car through an auto rental agency if yours is not drivable due to a covered auto accident. Some auto insurance companies will even send you a check for part of the allowed amount if you decide you do not need a replacement rental car.There are always some things that you will have to cover yourself no matter what how good your policy is. One of these items is any deductibles. A deductible is the amount of money that you have agreed to with your auto insurance company before the insurance company kicks in to pay their part.Exclusion is another item you will always have to pay. Exclusions are events or situations your policy specifically will not cover, such as property damage or personal injury you intentionally cause or damage to your own car due to mechanical failure or wear-and-tear.Another item that you will always have to pay for would be any costs above your policy limits. This would include any expenses that exceed the dollar amounts listed on your policy contract for coverage you are entitled to receive. This is a good argument against being underinsured. It is always the best way to go is to make sure you have enough auto insurance to cover any unseen accidents or damages to your property.