Compare car insurance renewal quotes: a worked example with IDV, add-ons and NCB
A full worked comparison of an Indian renewal notice against two online quotes, adjusting for IDV, NCB, zero dep, deductibles and claim-time cost, with the arithmetic shown.
To compare an Indian car insurance renewal notice with new quotes fairly, first make every quote match on IDV, NCB, add-ons, voluntary deductible and CPA, then compare two numbers: the total premium including 18% GST, and the total including what you would pay on a typical claim (deductibles plus depreciation, if the quote lacks zero dep). Quotes that look cheapest on an aggregator screen are often cheaper because the IDV has been lowered or an add-on is missing. The example below works through each adjustment with illustrative figures.
This guide is part of the car insurance renewal checklist. All figures are illustrative, not market prices.
Step 1: the renewal notice as baseline
Your insurer's notice for a 1,197 cc petrol hatchback, 3 years 2 months old:
- Comprehensive policy, IDV ₹4,80,000
- NCB 35% applied
- Add-ons: zero depreciation, engine protection, roadside assistance
- Compulsory deductible ₹1,000, no voluntary deductible
- CPA included
- Total premium: ₹15,640 including GST
Step 2: what the new quotes show at first
| Quote | Total with GST | IDV | NCB | Zero dep | Engine protect | RSA | Voluntary deductible |
|---|---|---|---|---|---|---|---|
| Renewal | ₹15,640 | ₹4,80,000 | 35% | Yes | Yes | Yes | None |
| Online A | ₹11,980 | ₹4,10,000 | 35% | No | No | Yes | ₹2,500 |
| Online B | ₹14,300 | ₹4,70,000 | 35% | Yes | No | Yes | None |
On the face of it, A is ₹3,660 cheaper than the renewal. But A has a lower IDV, no zero dep, no engine protection and a voluntary deductible.
Step 3: rebuild each quote to the same specification
Ask each insurer, or rerun the online journey, with IDV ₹4,80,000, zero dep, engine protection, RSA, no voluntary deductible. Suppose the revised figures are:
| Quote | Revised total with GST |
|---|---|
| Renewal | ₹15,640 |
| A | ₹15,210 |
| B | ₹14,890 (engine protection added for ₹590 incl. GST) |
The gap has shrunk from ₹3,660 to ₹430 for A and ₹750 for B. Most of A's apparent saving came from insuring less.
Step 4: test a realistic claim
Suppose you did not want to rebuild A, and are deciding between the original A (no zero dep) and B. Test a front-end collision repair of ₹45,000: parts ₹33,000 (₹15,000 plastic at 50%, ₹18,000 metal at 25% for a car 3–4 years old) and labour ₹12,000.
Depreciation without zero dep:
- Plastic: ₹15,000 × 50% = ₹7,500
- Metal: ₹18,000 × 25% = ₹4,500
- Total depreciation: ₹12,000
Your share at claim time:
- Original A: compulsory ₹1,000 + voluntary ₹2,500 + depreciation ₹12,000 = ₹15,500
- B (revised): compulsory ₹1,000 = ₹1,000
Total for the year with one claim:
- Original A: ₹11,980 + ₹15,500 = ₹27,480
- B revised: ₹14,890 + ₹1,000 = ₹15,890
With no claim, original A saves ₹2,910 versus B. With one claim of this size, B is ₹11,590 cheaper. B wins if the chance of such a claim in the year is above about one in five (₹2,910 ÷ ₹14,500 extra out-of-pocket ≈ 0.20). The quote comparison tool does this for any bill size.
Step 5: check NCB and claim history on every quote
All three quotes assume 35% NCB. If an online quote shows a higher NCB than you are entitled to, it will be cheaper on screen but the insurer can correct it later or dispute a claim. If it shows a lower NCB, you are overpaying; correct it. Remember that NCB applies only to the OD premium.
Step 6: compare what is not in the price
| Item | Why it matters |
|---|---|
| Cashless garages near you | Cashless repair avoids paying the full bill upfront; see cashless vs reimbursement |
| Zero dep claim limit | One or two claims a year in many wordings |
| Engine protection wording | Some cover only water ingress, others also oil leakage |
| Inspection requirement | A new insurer may ask for a video inspection before issuing |
| Claims contact | Whether there is a 24-hour helpline and app-based survey |
Step 7: decide
In this example, B on equal terms is ₹750 cheaper than the renewal with the same cover. You can show the B quote to your current insurer and ask whether it can review the renewal; insurers are not obliged to match. If not, buy B with the start date set to the day after your current policy ends, and keep the old policy PDF as proof of NCB.
Mistakes to avoid
- Comparing totals before aligning IDV and add-ons.
- Ignoring the voluntary deductible box that some journeys pre-fill.
- Treating a standalone OD quote as comparable to a comprehensive renewal.
- Assuming the cheapest premium means the cheapest claims experience.
Related guides
Frequently asked questions
Is it better to renew with the same insurer?
There is no general rule. Staying can make claims history easier to verify, but your NCB moves with you. Compare on equal terms each year.
Why do online quotes differ so much for the same car?
OD pricing is set by each insurer based on its own claims experience by model, age and zone, and add-on prices vary widely. The TP line should be identical.
Can I negotiate a renewal premium?
You can ask for a review, especially with a written quote on identical terms. Insurers must charge within their filed rates, so the room varies.
How many quotes should I get?
Two or three on identical terms is usually enough to see whether your renewal is reasonably priced.
Sources
- IRDAI — list of insurers, registered web aggregators and brokers
- Bima Bharosa — complaints about mis-sold or incorrect policies
- Parivahan Sewa — vehicle details to check against each quote
