How to Compare Car Insurance Quotes Without Being Fooled by Low IDV

Key takeaways

Only compare quotes with the same coverage: IDV, add-ons, NCB, deductibles and PA cover.
If IDVs differ, compare premium per ₹1 lakh of IDV.
Check the own-damage and third-party split — third-party is the same at every insurer.
Price is one factor; claim service and garage network matter too.

Comparison websites and insurer apps make it easy to line up quotes. They also make it easy to compare the wrong things. A quote can look ₹1,500 cheaper simply because it insures your car for ₹60,000 less.

Step 1: Fix your target IDV

Work out the schedule IDV with the car IDV calculator. When you request quotes, set the IDV at or close to that figure. If an insurer won’t go that high, note it.

Step 2: Match the add-ons

Zero-dep alone can account for a large part of the own-damage premium on a new car. Make sure every quote has the same add-ons, or remove them from all.

Step 3: Check the NCB and deductible

Your NCB should be identical on every quote. A quote with a voluntary deductible will look cheaper because you are agreeing to pay more on each claim.

Step 4: Split the premium

Look at own-damage and third-party separately. Third-party is fixed by the Government, so any real price difference sits in the own-damage part and the add-ons.

Step 5: Compare cost per lakh of cover

Cost per ₹1 lakh = Total premium ÷ IDV × 1,00,000

A worked example

Quote	IDV	Total premium	Per ₹1 lakh IDV
Insurer A	₹4,55,000	₹13,400	₹2,945
Insurer B	₹5,20,000	₹14,600	₹2,808
Insurer C	₹5,60,000	₹15,900	₹2,839

Insurer A is the cheapest but the worst value: moving from A to B buys ₹65,000 more cover for ₹1,200 — about ₹1,850 per extra lakh. If the schedule IDV is ₹5,20,000, A is 13% under-insured. B is the best value per lakh; C costs ₹1,300 more for another ₹40,000 of cover (about ₹3,250 per extra lakh), which is a closer call.

Run your own quotes through the same comparison.

IDV vs Premium Tool

Quote comparison checklist

Check	Should match across quotes?	Why
IDV	Close (within a few %)	Decides theft and total-loss payout
NCB %	Exactly	Your NCB is the same everywhere
Add-ons	Exactly	Zero-dep, RTI and engine cover change the price a lot
Voluntary deductible	Exactly	A deductible lowers price but raises your share of claims
PA cover	Exactly	₹15 lakh owner-driver cover is compulsory unless you have equivalent cover
Third-party premium	Always identical	Fixed by the Government — a difference means a different vehicle class or error
Declared accessories / CNG kit	Exactly	Undeclared items aren’t covered

Beyond price

Cashless garages near you — especially your preferred workshop or the brand’s authorised service centre.
Claim experience — IRDAI publishes insurers’ claims data in its annual report; online reviews and the experience of people you know help too.
Add-on wording — claim limits on zero-dep, what RTI counts as invoice value, towing limits on RSA.
Inspection rules — if your policy has lapsed, an inspection may be required before cover starts.

Red flags

A quote with a noticeably lower NCB than the others.
An IDV much lower than the schedule value with no explanation.
Add-ons you didn’t ask for, or ones missing that you did.
A “too good” price from an unknown website — buy only from the insurer or an IRDAI-registered intermediary.

FAQs

Is the cheapest third-party premium available somewhere?

No. Third-party premium is the same at every insurer; only own-damage and add-ons differ.

Should I always pick the highest IDV offered?

Pick the IDV closest to the schedule value (or real market value for older vehicles). Higher than that adds cost without much benefit.

Sources

Worked example computed with the idvcalculator.com IDV vs premium comparison tool; third-party premiums per the 2022 Government rules.