Engine Protection, Consumables, RSA and Other Add-ons: Which Ones Matter

Key takeaways

Add-ons fill specific gaps in the standard own-damage cover; each has its own conditions.
For newer cars, zero-dep, engine protection and Return to Invoice usually matter most.
Roadside assistance and key replacement are convenience covers — cheap, but check what you already get from your manufacturer.
Compare quotes with the same add-ons, or you are not comparing like with like.

A standard comprehensive policy covers a lot, but it leaves predictable gaps: depreciation on parts, engine damage from water, consumables, the IDV-to-invoice gap, and breakdowns. Add-ons are priced extras that close those gaps. Here is a practical way to decide which ones are worth it.

The common add-ons at a glance

Add-on	What it covers	Most useful for
Zero depreciation	Waives depreciation on replaced parts in repair claims	New and nearly new vehicles
Engine protection	Engine and gearbox damage from water ingress, oil leakage or hydrostatic lock — usually excluded as consequential loss	Flood-prone cities, low-slung cars, costly engines
Return to Invoice	Gap between IDV and invoice value on theft or total loss	New, financed or high-theft vehicles
Consumables	Engine oil, coolant, brake fluid, nuts, bolts, clips and similar items used in a repair	Owners who claim for accidents and want the smallest out-of-pocket
Roadside assistance	Towing, battery jump-start, flat tyre, fuel delivery, key lockout	Highway drivers; vehicles without manufacturer RSA
NCB protection	Keeps your NCB after a limited number of claims	35%–50% NCB on a high own-damage premium
Key replacement	Cost of replacing lost or stolen keys and, sometimes, locks	Cars with expensive smart keys
Tyre protection	Accidental tyre damage beyond the base policy’s limits	Premium tyres, rough roads

How to prioritise

For a car under three years old

Zero-dep and Return to Invoice protect the two biggest money gaps. Add engine protection if you live in a city that floods during the monsoon. Consumables makes sense if you expect to claim.

For a car three to five years old

Zero-dep is still useful if you claim. RTI may no longer be available. Engine protection stays relevant in flood-prone areas. NCB protection becomes more valuable as your NCB reaches its peak.

For older cars

Many add-ons stop being available, and the low IDV reduces their value. Keep the base comprehensive cover right and choose roadside assistance if your car is no longer under any manufacturer programme.

For two-wheelers

Zero-dep and RTI are offered by many insurers and are inexpensive. Roadside assistance is helpful for long rides. Engine protection matters in flood-prone areas.

Read the conditions

Claim limits: zero-dep and NCB protection often cover a limited number of claims a year.
Age limits: RTI and zero-dep are usually available only up to a certain vehicle age.
Continuity: some insurers offer an add-on on an older vehicle only if it was on the previous policy.
Distance limits: roadside assistance may have a towing distance limit.
Overlap: new vehicles often come with manufacturer roadside assistance or extended warranty. Don’t pay twice.

What add-ons cost

Each insurer prices add-ons differently. Some are a percentage of IDV or of the own-damage premium (zero-dep, RTI, engine protection); others are a flat amount (roadside assistance, key replacement). The easiest way to see the real cost is to ask for two quotes from the same insurer, with and without the add-on. Our premium estimator shows indicative prices so you can see the structure.

Compare renewal quotes with different add-on packs side by side.

Renewal Comparison Tool

FAQs

Can I buy add-ons with a third-party-only policy?

No. Add-ons attach to own-damage cover, so you need a comprehensive or standalone own-damage policy.

Do add-ons get NCB discount?

It depends on how the insurer prices them. NCB is applied to the own-damage premium; whether add-on premiums are included varies.

Is engine protection the same as an extended warranty?

No. Engine protection covers accidental damage such as water ingress. Extended warranty covers manufacturing defects and breakdowns.

Sources

Add-on cover wordings filed by Indian general insurers with IRDAI; standard policy exclusions for consequential loss, wear and tear and mechanical breakdown.