Actual cash value equals the purchase price of your car minus depreciation and your deductible. So comprehensive coverage will pay an amount up to the actual cash value of your car to either repair or (in the case of a total loss) replace it. If the cost of repairs exceeds your car's ACV, your car insurance company will declare it a total loss and pay the sum of the car's ACV to help you replace it — unless you opt to retain salvage (i.e., keep the totaled car), in which case the salvage value will also be deducted from your payout.
Besides the legal clause, Third Party Insurance comes in handy when your vehicle hits another vehicle. You can’t measure the level of damage as a result of an accident - it might lead to death as well. In such instances, the victim is allowed to register a case claiming for compensation. Here your third party motor insurance comes into the picture. It covers the insured vehicles in case any liability claim arises out of bodily injury, property damage, or death of a person. As per the guidelines of IRDA third-party property damage cover is limited up to 7 lakhs. Moreover, sticking to third party liability insurance is a wise idea if you own an old car and don’t want to spend your hard-earned money on it.
If you have paid off your car, comprehensive coverage is optional. It may be a good idea to find out the Kelley Blue Book value of your vehicle. Would you be able to pay that amount to repair or replace your vehicle if it were stolen or damaged in an accident? If you can't afford to pay much out of pocket, then buying optional coverages, like comprehensive coverage and collision coverage, may be a smart investment.