The price of car insurance does not always reflect the actual level of protection. Two policies with the same premium can differ in their excess, compensation limits or cover for specific parts. Comparing car insurance coverage means looking beyond the monthly price to assess what each policy covers—and, above all, what it excludes.
Third-party, extended third-party and comprehensive cover: the practical differences
| Criteria | Third-party (liability) | Extended third-party | Comprehensive |
|---|---|---|---|
| Damage caused to others | Yes (mandatory) | Yes | Yes |
| Theft and fire | No | Yes | Yes |
| Windscreen and glass damage | No | Depending on the policy | Yes |
| Damage to your vehicle (at-fault accident) | No | No | Yes |
| Natural disasters | No | Depending on the policy | Yes |
| Typical excess | None (no cover for your own damage) | Variable | Variable, often higher |
Third-party cover is the only type required by law. It covers only damage you cause to someone else. It can be a good fit for an older vehicle with a low resale value, since the cost of broader cover could quickly exceed the value of the vehicle being insured.
Extended third-party cover adds theft, fire and sometimes glass damage. It is a common compromise for used vehicles less than ten years old. Anyone looking for car insurance for a 306 convertible on Aide Auto will also find that this type of mid-level cover is often suitable for older models still used every day.
Comprehensive cover also protects your own vehicle if you are at fault in an accident. The premium is higher, but many policies also have a higher excess. Comprehensive cover with an €800 excess offers less protection than it may seem for low-value claims.

Excesses and compensation limits: what the premium does not tell you
The excess is the amount you have to pay after each claim. Two policies with similar premiums can have excesses that vary threefold. Online comparison sites rarely highlight this, even though it determines the policyholder’s actual cost when making a claim.
France Assureurs notes that the cost of car repairs continues to rise, even as the number of claims remains stable or falls slightly. This makes the compensation limit just as important as the excess: if your policy caps cover for property damage at a low amount, the difference between the repair estimate and the payout can be significant.
Choice of repairer and out-of-pocket costs
The French Insurance Code requires policies to state that you can choose your repairer for covered damage. In practice, being free to choose your repairer does not prevent out-of-pocket costs if the estimate exceeds the amount assessed by the insurer’s appointed expert.
Checking the assessment rules set out in the policy (manufacturer’s rates, approved repair network, hourly labour-rate cap) can help you anticipate this difference before it arises when you make a claim.
Reused parts and electric vehicle batteries: two factors often missing from comparisons
Reused parts: coverage varies by policy
The use of reused parts (second-hand parts taken from end-of-life vehicles) is regulated by law and is becoming more common in repair work. However, reimbursement depends on the terms of the insurance policy.
- Some policies require the use of reused parts when available, which lowers the premium but limits your choice of repairer in terms of the parts used.
- Others let the policyholder choose but adjust the payout accordingly: a new part is reimbursed up to the cost of an equivalent reused part.
- Safety components (airbags, braking parts) are generally excluded from reuse for regulatory reasons.
Reading the clause on replacement parts before signing can help you avoid surprises when repairs are needed.
Electric vehicle batteries: a separate repair consideration
For electric and plug-in hybrid cars, the battery accounts for a significant share of the vehicle’s value. Insurers vary widely in how they cover battery damage. Some comprehensive policies exclude the battery or cover it only in the event of a total loss.
Insurance policies are expected to gradually include more specific cover for this component, but the market remains inconsistent for now.

A checklist for comparing car insurance quotes
Beyond the advertised price, carefully review the following details in each quote:
- The excess for each type of claim (theft, at-fault accident, glass damage), as it can vary within the same policy.
- The compensation limit for property damage, especially if the vehicle’s residual value is more than a few thousand euros.
- Specific exclusions: driving off-road, lending the vehicle to an undeclared driver, or mandatory use of reused parts.
- The assessment clause and the rate schedule used to calculate repair costs (manufacturer’s rates or the insurer’s own schedule).
- For an electric vehicle, explicit confirmation of battery cover and the related assessment conditions.
Comparing three quotes across these five points takes less than an hour and reduces the risk of discovering a gap in your cover at the worst possible time. The premium is only an incomplete summary: the true quality of your protection is determined by the policy’s specific terms and conditions.



