Car Insurance: IDV, Zero Depreciation and Engine Protection

Compare car insurance by coverage, IDV, deductibles and exclusions before choosing the premium. IDV concerns the vehicle's insured value; zero depreciation addresses specified depreciation deductions; engine protection is a separate add-on with its own insured events. None is a promise that every repair will be paid in full.

Separate third-party and own-damage protection

The IRDAI motor insurance guide states that third-party liability cover is mandatory for vehicles used on public roads in India and distinguishes it from cover for damage to the insured vehicle. A liability-only policy does not provide the same protection as a package including own damage.

Check the policy's actual periods. A bundled purchase can include different durations for different sections, so a headline multi-year description should not be assumed to extend all protection equally. Record the expiry of each relevant section and any add-on.

A financed car may also have lender-related requirements, but ask for their basis in the agreement. Do not confuse a lender's commercial requirement with a universal rule. Compare the actual policy schedule and wording rather than relying on a dealership's verbal summary.

Understand what IDV does and does not mean

Insured Declared Value is the own-damage sum insured for the vehicle under the policy's terms. IRDAI advises comparing IDV, deductibles and coverage because a lower premium can reflect lower protection. IDV is not simply the amount you paid for the car or a guaranteed reimbursement for every claim.

For theft or a qualifying total-loss event, settlement depends on the wording, deductions and applicable conditions. For a repairable partial loss, the approved repair claim follows its own assessment. Raising IDV does not mean every scratch produces a proportionally larger payout.

Consider a hypothetical comparison: Policy A quotes ₹25,000 premium at ₹8 lakh IDV; Policy B quotes ₹23,000 at ₹6.5 lakh. The ₹2,000 saving does not establish equal value because the insured amount differs by ₹1.5 lakh. These are illustrations, not actual insurer quotes.

Read zero-depreciation cover carefully

Zero-depreciation cover generally modifies specified depreciation deductions on eligible repaired or replaced parts under the add-on. It does not remove every deductible, exclusion, consumable charge or claim limit. Vehicle age, parts covered and permitted claims can differ across products.

Tata AIG's own product explanation lists zero depreciation and engine secure as distinct add-ons. This supports separating them in your comparison, not assuming every insurer uses identical wording or provides the same scope.

Ask for an illustration showing a hypothetical repair with and without the add-on under that actual policy. Identify compulsory and voluntary deductibles, consumables and excluded items. The phrase bumper-to-bumper is a sales shorthand and should not substitute for a written coverage explanation.

Check the events covered by engine protection

Engine protection can address specified consequential engine or transmission damage, such as events described by a particular insurer's water-ingress or oil-leakage cover. It is not ordinary wear-and-tear insurance or a promise to repair every mechanical failure.

Read conditions concerning water exposure, attempted restarting, maintenance and claim evidence. Do not intentionally drive into floodwater because an add-on exists. If the vehicle is submerged or an engine problem follows water exposure, follow the manufacturer's and insurer's instructions and avoid actions that can worsen damage.

For EVs, ask for the relevant battery and electrical coverage instead of assuming an engine-labelled add-on answers the main risk. Coverage for the traction battery, charger or consequential electrical damage must be checked in the actual policy.

Compare quotes and prepare for a claim

Use the same vehicle, IDV, coverage periods, deductibles and add-ons across quotations. Check workshop access, cashless arrangements and the claims process without assuming that network presence guarantees approval of every repair. Cashless settlement is a payment arrangement, not a waiver of policy conditions.

If an incident occurs, keep photographs and relevant documents, notify the insurer under the policy requirements and obtain instructions before non-emergency repairs. Police reporting can be relevant depending on the event; confirm the requirement for theft, third-party incidents or other circumstances rather than applying one rule blindly.

Renew before the relevant cover expires and disclose changes accurately, including fuel conversions or modifications. Check the registration, engine/chassis details and recorded claims history on the issued policy. A small clerical error is easier to resolve before a loss than during an urgent claim.

Quick questions, clear answers

Does zero depreciation remove all deductions?

No. It changes the deductions specified in its wording, while deductibles, exclusions and other charges can remain. Ask for a written claim illustration and check age limits, claim counts and parts coverage for your actual product.

Is the lowest IDV a sensible way to save premium?

Only after understanding the reduced protection and policy basis. Compare premiums at consistent IDV before deciding. A modest premium saving may be unattractive if it materially lowers the amount available under an eligible theft or total-loss claim.

Does engine protection cover routine breakdowns?

Do not assume so. The add-on covers specified events and conditions, not every cause of mechanical failure. Review exclusions for wear, maintenance and consequential damage, and ask the insurer to explain any term relevant to your use.

About this guide

Aniket Thakur used secondary regulator and insurer material checked on 22 October 2026. No policy or claim was individually assessed. Verify current product wording, limits, periods and claims requirements before publication; examples are hypothetical.