Two policies in one document
A motor policy does two unrelated jobs, and the reason one of them is compulsory has nothing to do with protecting your car.
| Third-party liability | Own damage | |
|---|---|---|
| Covers | Injury, death or property damage you cause to others | Damage to your own vehicle |
| Compulsory? | Yes, by law | No |
| Limit | Unlimited for injury and death to a third party | Capped at your IDV |
| Premium set by | Regulation, by engine capacity | The insurer, competitively |
The unlimited liability is the point. A serious injury claim awarded by a tribunal can run to sums no individual could pay, and that exposure is why the state makes the cover compulsory — it exists to protect the person you might injure, not you. Driving without it is an offence.
“Comprehensive” simply means both together. Third-party-only cover is legal and cheap, and it leaves your own vehicle entirely unprotected.
IDV cuts both ways
Insured Declared Value is the current market value of your vehicle as agreed with the insurer, arrived at by depreciating the manufacturer's listed price by age.
It does two things simultaneously, and this is the part worth understanding before renewal:
- It is the maximum the insurer will ever pay — the amount you receive on theft or a total loss.
- It is the base on which your own-damage premium is calculated.
So the renewal offer that lets you nudge IDV down to reduce the premium is not offering a discount. It is offering to reduce your own maximum payout, proportionately, in exchange for a smaller saving. On a total loss — the one event where the policy matters most — you receive the lower figure.
Understating IDV is also not free in the other direction: a partial claim can be settled proportionately where the vehicle is found to be under-insured, in the same way the room rent clause reprices a hospital bill. Declare an IDV that reflects what the vehicle is actually worth.
Why a claim rarely pays the full repair
The gap between a repair bill and a settlement usually comes from three deductions, all of which are in the policy and none of which is a surprise to the insurer.
Depreciation on parts. Plastic, rubber, fibreglass and similar parts depreciate steeply; metal parts depreciate on a scale by vehicle age. The insurer pays the depreciated value of the part, not the new price you were charged. On an older vehicle this is the largest single deduction.
Compulsory deductible. A fixed amount you bear on every own-damage claim.
Excluded items. Consumables — engine oil, coolant, nuts and bolts, lubricants — and often the labour attributable to them.
Add-ons address these directly. Zero depreciation pays the full part cost rather than the depreciated value, and it is the one add-on that materially changes claim outcomes on a newer vehicle. Consumables cover and engine protection — the latter mattering in flood-prone areas, since hydrostatic lock is usually excluded from a standard policy — are worth considering on their merits rather than as a bundle.
No claim bonus is worth more than small claims
Each claim-free year earns a discount on the own-damage premium, rising over consecutive years to a substantial share.
The arithmetic that follows is the one people get wrong: making a small claim resets the accumulated bonus to zero. Claiming ₹8,000 for a scratched bumper can cost more than that in lost discount over the following years, and the loss compounds because you restart the ladder from the bottom.
The working rule is to self-fund small damage and claim for large damage — which is the general insurance principle of insuring the unaffordable, not the annoying, applied within a policy you already hold.
The bonus attaches to you, not the vehicle, so it transfers when you change cars — and it can usually be transferred between insurers, which means switching does not require giving it up.
What a standard policy does not cover
- Driving without a valid licence, or under the influence. Both void the claim.
- Consequential damage — most notably restarting a flooded engine, which causes hydrostatic lock. The water damage may be covered; the damage caused by trying to start it generally is not.
- Normal wear and tear, and mechanical or electrical breakdown that is not accident-related.
- Using a private vehicle commercially, which is a different category of policy.
- Unapproved modifications, and often damage attributable to them.
The flood rule is worth knowing before the situation arises rather than after: if a vehicle has taken on water, the expensive mistake is turning the key.
Making a claim
- Inform the insurer immediately, before repairs begin. Delayed intimation is a common reason for rejection.
- File a police report for theft, third-party injury, or significant damage.
- Photograph everything at the scene, before the vehicle is moved.
- Use a network garage for cashless, or pay and claim reimbursement.
- Do not authorise repairs until the surveyor has inspected, unless the insurer has agreed.
On a total loss or theft, the settlement is the IDV — which returns to the section above, and to why the figure on your renewal notice deserves a moment's attention.
Where this sits
Motor cover is a legal requirement first and a financial decision second. The financial part is small: the premium is a modest recurring cost, and the decision that matters is IDV plus one or two add-ons rather than the choice of insurer.
The deductions above are also the argument for an emergency fund alongside the policy. Depreciation, the deductible and consumables mean a repair bill is never fully reimbursed, and the shortfall has to come from somewhere that is not a credit card.
FNOTrader does not sell insurance and does not recommend policies or insurers.
Common questions
What is the difference between third-party and comprehensive motor insurance?
Third-party covers injury, death or property damage you cause to others and is compulsory by law, with unlimited liability for third-party injury. Own damage covers your own vehicle and is optional, capped at your IDV. Comprehensive is simply both together.
What is IDV in motor insurance?
Insured Declared Value — your vehicle's current market value after depreciation. It is both the maximum the insurer will ever pay on theft or total loss and the base on which your own-damage premium is calculated.
Should I reduce my IDV to lower the premium?
Lowering IDV reduces the premium and reduces your maximum payout by the same proportion, so on a total loss you receive the lower figure. Under-insuring can also lead to proportionate settlement of partial claims — declare what the vehicle is actually worth.
Why did my claim pay less than the repair bill?
Three standard deductions: depreciation on parts, with plastic and rubber depreciating steeply; the compulsory deductible you bear on every own-damage claim; and excluded consumables such as oil, coolant and lubricants.
Is zero depreciation cover worth it?
It pays the full cost of replaced parts rather than their depreciated value, which is the largest single deduction on most claims. It is the add-on that most materially changes claim outcomes, and it matters most on a newer vehicle.
Should I claim for minor damage?
Usually not. A claim resets your accumulated no claim bonus to zero, so claiming ₹8,000 for a bumper can cost more than that in lost discount over following years. Self-fund small damage and claim for large damage.
Does no claim bonus transfer if I change my car or insurer?
Yes. The bonus attaches to you rather than the vehicle, so it carries over when you change cars and can usually be transferred between insurers — switching does not require giving it up.
Is flood damage covered?
Water damage may be covered, but damage caused by trying to restart a flooded engine — hydrostatic lock — is generally excluded as consequential damage. If a vehicle has taken on water, the expensive mistake is turning the key.
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