Vehicle Diminished Value Claims After Traffic Accidents 

1) What Is Diminished Value?

Diminished value is the market-price drop that remains after repairs—driven by accident records, replaced/painted parts, and expert notes—so that the car sells for less than an undamaged equivalent.

2) Legal Framework

• Under general tort rules of the Turkish Code of Obligations, diminished value is a pecuniary loss.
• Within the compulsory liability insurance (CTPL/ZMSS) regime, the at-fault party’s insurer is liable within policy limits.
• Court practice treats diminished value as technically assessable through automotive/actuarial methods.

3) When Can You Claim? (And Common Misconceptions)

Typical eligibility factors:

• You are fault-free or less at fault than the other driver.
• Repairs were performed and the loss is recorded.
• Age/mileage influence quantum (older/high-mileage cars often see lower awards, not an automatic bar).
• Limitation: 2 years from knowledge and 10 years absolute (TCO Art. 72); insurer filing + 15-day waiting apply.

Misconceptions:

• “Severe damage record kills the claim.” → It usually reduces/reshapes the amount; it doesn’t automatically bar recovery.
• “Any fault bars recovery.” → Contributory negligence may reduce the award; a fully at-fault owner cannot recover.

4) Whom to Sue?

• The compulsory traffic insurer (within limits).
• The driver and operator/owner (for the excess, often joint and several).
• Forum: Insurance Arbitration Commission or civil/commercial courts.

5) Claim & Litigation Roadmap

1. Accident documents: police/accident report, photos/videos, witnesses.
2. Repair records: invoices, part lists, paint/bodywork items.
3. Independent appraisal: diminished value report with market evidence.
4. Written claim to insurer; wait 15 days.
5. If rejected/short-paid:
   • File with the Insurance Arbitration Commission (often 4–6 months), or
   • Sue in court (expert evidence).
6. Interest: commonly from insurer default/application; against driver/owner, sometimes from accident date.
7. Enforcement after final award.

6) How Is It Calculated?

Methods weigh make/model, year, mileage, number/type of damaged/replaced panels, structural impact, paint thickness, market liquidity and repair quality.
Rules of thumb:

• Structural damage and multi-panel paint/replacements increase loss.
• Purely cosmetic repairs reduce it.
• Segment and market depth matter; so does OEM vs. aftermarket and repair quality.

Practice tip: Support the formula outcome with real market data (comparable listings, expert opinions).

7) Evidence & Strategy

• Full repair invoices with part numbers.
• Pre/post appraisals (incl. paint-thickness readings).
• Market comps and price-impact analysis.
• Photos/videos and workshop correspondence.
• Service & mileage records to show maintenance history.

8) Common Pitfalls

• Submitting only a bare formula without market proof.
• Forgetting VAT/labor or ancillary items.
• Missing limitation or the 15-day wait.
• Under-documenting structural damage.

9) Quick FAQs

Rental cars? Claims usually belong to the lessor; check contract/risk allocation.
If accident record is later removed? You may still recover with proof of real price impact.
Total-loss/previous salvage title? Typically limited or no diminished value—fact dependent.

Disclaimer: Informational only; not legal advice. For tailored strategy, consult counsel. Türeli & Ceylan manages the process end-to-end, from insurer filing to enforcement.