The Federal Court of Justice changed the calculation in 2024: market-based diminished value is now determined from the net sale price.
In short: Market-based diminished value is the loss in value your vehicle retains after an accident even when it has been properly repaired. You are entitled to it alongside the repair costs, under § 251 (1) BGB (German civil code). Since the Federal Court of Justice ruling of 16 July 2024 it is always calculated from the net sale price, for private individuals just as for businesses.
Market-based diminished value is the amount by which your vehicle is worth less after the accident than before, even though the repair was carried out completely and properly. It does not arise in the metal but in the market: buyers pay less for a vehicle with an accident history than for a comparable accident-free one. The reason is the concern about hidden consequential damage and about poorer resale prospects.
In law this loss in value is a head of damage in its own right. It is owed in addition to the repair costs, not instead of them. That applies even where you settle notionally, that is where the vehicle is not repaired at all or not fully. The case law on this is old and settled; it goes back to judgments of the Federal Court of Justice from 1958 and 1963.
Case law: BGH, judgment of 29 April 1958 – VI ZR 82/57, and BGH, judgment of 30 September 1963 – III ZR 137/62. The loss of market value remaining after the repair is a recoverable financial loss and not a mere sentimental one.
Why the market reacts this way can be read from the buyer's position. Anyone buying a used vehicle cannot check the quality of a past repair for themselves. They do not know whether load-bearing structure was affected, how carefully it was straightened and protected against corrosion, or whether late consequences will appear. They price in that residual risk by bidding less or by turning to an accident-free vehicle instead. The loss in value is therefore not imagined but a measurable response to a gap in information – and it only hits you at the point of sale, which may be years after the accident.
A practical side effect: market-based diminished value counts towards the question of whether a repair is still economically justifiable. Under the so-called 130 percent rule, repair costs and diminished value together may reach up to 130 percent of the replacement value before the claim is switched to a total loss basis (BGH, judgment of 15 October 1991 – VI ZR 314/90; BGH, judgment of 3 March 2009 – VI ZR 100/08).
Technical diminished value concerns the vehicle itself; market-based diminished value concerns its price on the market. Technical diminished value exists where a material disadvantage remains after the repair, for instance permanently poorer corrosion protection on a repaired component or a function that cannot be fully restored. Market-based diminished value, by contrast, presupposes that everything is technically in order again.
In modern repair practice technical diminished value rarely arises, because a proper repair as a rule restores the technical condition. The economically significant item is therefore almost always the market-based diminished value. The two do not exclude one another; where a technical disadvantage does exceptionally remain, it is to be assessed separately.
Since then, market-based diminished value must be calculated from the net sale price without exception. On 16 July 2024 the Federal Court of Justice held that it makes no difference whether the injured party is a business entitled to deduct input tax or a private individual. Where the diminished value was initially derived from a gross sale price, the VAT element contained in it is to be taken out.
Case law: BGH, judgments of 16 July 2024 – VI ZR 205/23 and VI ZR 188/22. Market-based diminished value is to be calculated from the net sale price, irrespective of who the injured party is; an amount determined on a gross basis is to be reduced by the VAT element.
The reasoning is doctrinal and has far-reaching consequences. Diminished value is not a payment for a service but compensation under § 251 (1) BGB. Compensation is neutral for VAT purposes: no VAT flows, and none can therefore be reimbursed. That separates diminished value from the scheme of § 249 (2) sentence 2 BGB, under which VAT is only reimbursed so far as it has actually been incurred.
For you as the injured party, the decision means that the amount paid out is lower than under the gross approach that used to be common. The difference corresponds to the VAT element. If you are a private individual and read in an older guide that you are entitled to diminished value on a gross basis, that statement has been out of date since 16 July 2024. An insurer that settles on a net basis is applying the law as it stands.
For the appraisal it means that the reference figure must be disclosed in the report. A report that states diminished value without giving the basis of calculation is open to challenge today. Older report templates that calculate on a gross basis need adjusting.
Careful: Check in any report whether the stated diminished value was determined net. If an amount calculated on a gross basis is claimed, the insurer will reduce it by reference to the decisions of 16 July 2024 – and will be right to do so. That costs time in the course of settlement.
There is no method prescribed by statute or by the highest court. The Federal Court of Justice requires an estimate under § 287 ZPO on the basis of an appraiser's report; a purely formulaic calculation is not enough for it (BGH, judgment of 18 September 1979 – VI ZR 16/79). In practice several procedures compete, and they can produce different results.
| Method | Approach | Standing in practice |
|---|---|---|
| Ruhkopf/Sahm (1962) | Formula: a percentage of the replacement value and the repair costs, graduated by the age of the vehicle | The oldest procedure. Requires repair costs of at least about ten percent of the replacement value. Criticised in more recent case law as no longer up to date |
| Halbgewachs | Formula, based on the new price and the sale value | Likewise with a threshold of around ten percent. Subject to the same criticism as Ruhkopf/Sahm |
| BVSK model | Takes account of vehicle age, replacement value, repair costs, marketability and extent of damage | Regarded as a more modern procedure because it weighs several factors alongside one another |
| Market relevance and factor method (MFM) | Factor-based and market-oriented | Regarded as a more modern procedure and frequently used in appraisal practice |
| Heintges | Factor-based | Also counted among the more modern procedures |
The essential difference lies in the direction of view. The older formula procedures derive diminished value arithmetically from age, replacement value and repair costs, and need a minimum level of damage before the formula bites at all. The factor-based procedures additionally ask how the damage plays out on this particular market: how sought-after the model is, which components were affected, whether load-bearing structure was damaged.
Which method is to be applied has not been settled uniformly. It is expressly the appraiser's task to consider several procedures and to give reasons for the result, rather than relying on a single formula. Local court decisions have preferred the more modern methods, for example the local court of Pfaffenhofen in case 1 C 430/13. A general statement that diminished value is calculated by one particular procedure would be inaccurate.
There is no rigid limit. The rule of thumb once widely used – that no diminished value is to be allowed beyond five years or 100,000 kilometres – goes back to older case law and is out of date in that absolute form. In 2004 the Federal Court of Justice expressly held that there can be no rigid limit beyond which a loss in value would have to be refused in every case. It based that on the increased longevity of modern vehicles.
Case law: BGH, judgment of 23 November 2004 – VI ZR 357/03 (BGHZ 161, 151). Age and mileage are only indicators; what decides is whether the accident actually depresses the price.
What governs is therefore the market question in the individual case: after the repair, do you achieve a lower price than you would have without the loss event? If so, there is a claim, regardless of the odometer reading and the year of registration. The higher regional court of Düsseldorf allowed diminished value on a vehicle more than five years old with around 140,000 kilometres (judgment of 26 June 2012 – I-1 U 149/11).
Conversely, the claim falls away where the proceeds achievable after the repair are no lower than those that would have been achievable without the accident. That concerns above all purely superficial minor damage. There is no fixed lower limit in euros above which diminished value would have to be allowed. At what age and mileage the lower courts still award it in the individual case they decide inconsistently; no figure that holds good nationwide can be given here.
After a not-at-fault accident the other side's motor liability insurer pays. The basis is the statutory claim in damages; there, diminished value is among the recoverable items and is settled alongside repair costs, appraiser's fees and the remaining heads of loss.
With your own Kasko (comprehensive) cover the position is different, because there it is not the law of damages that applies but the insurance contract. The Federal Court of Justice has classified market-based diminished value in the comprehensive insurance context as direct physical damage (judgment of 8 December 1981 – VI ZR 153/80). Whether and to what extent your insurer reimburses it, however, follows the agreed general terms of motor insurance. There is no uniform nationwide rule; what governs is the wording of your particular contract.
Yes. A repaired accident damage must be disclosed when selling the vehicle, without being asked, unless it was an entirely trivial, purely superficial matter. The duty to disclose exists regardless of how well the repair was carried out, and regardless of whether you sell privately or in the course of business.
If you deliberately conceal the damage, the buyer can rescind the contract for fraudulent misrepresentation under § 123 (1) BGB. An exclusion of warranty agreed in the contract will not help you then: under § 444 BGB a seller cannot rely on an exclusion of liability so far as they fraudulently concealed the defect. Describing the vehicle as "accident-free" in an advertisement or contract of sale is correspondingly inaccurate where accident damage has been repaired.
Careful: The duty to disclose is the other side of diminished value. It is precisely because you have to declare the accident that it shows up in the sale price – and precisely why it is recoverable. Keep the appraisal report and the repair records; they show the buyer the extent of the damage and that it was properly repaired.
Yes. Market-based diminished value is a head of damage in its own right under § 251 (1) BGB and is owed alongside the repair costs. It is reimbursed even where you settle notionally and have the vehicle repaired not at all or only in part. It is not set off against the repair costs.
Net. By its judgments of 16 July 2024 – VI ZR 205/23 and VI ZR 188/22 the Federal Court of Justice held that market-based diminished value is to be calculated from the net sale price. That applies to private individuals and businesses alike. An amount determined on a gross basis is to be reduced by the VAT element.
Because many guide pages reflect the position before 16 July 2024. Until then, calculation on a gross basis was widely applied to private individuals. Since the Federal Court of Justice's decisions the net basis governs uniformly, because diminished value is compensation under § 251 (1) BGB and not a service supplied for a fee. The difference from the earlier presentation corresponds to the VAT element.
Yes, that is possible. There is no rigid age or mileage limit. In 2004 the Federal Court of Justice made clear that diminished value is not to be refused across the board beyond a certain age. What decides is whether the accident actually depresses the price on the market.
By no prescribed one. The methods in use are Ruhkopf/Sahm, Halbgewachs, the BVSK model, the market relevance and factor method, and Heintges. The courts estimate under § 287 ZPO on the basis of a report. The appraiser is expected to consider several procedures and give reasons for the result rather than following a single formula.
Yes, unprompted and regardless of the quality of the repair. Only entirely trivial, purely superficial damage is excepted. If you conceal the damage, the buyer can rescind the contract under § 123 (1) BGB; an exclusion of warranty will not protect you where the concealment was fraudulent, under § 444 BGB.
Yes. When examining whether a repair is reimbursed instead of a replacement purchase, repair costs and market-based diminished value are added together. Together they must not exceed 130 percent of the replacement value. If the limit is exceeded even slightly, the claim for repair costs falls away entirely; what is then reimbursed is only the replacement cost, that is the replacement value less the salvage value.
This article reflects the position as at 3 August 2026 and is no substitute for legal advice in an individual case. Written by PKW Gutachter Service GmbH, automotive appraisal firm, Neu Wulmstorf, Germany.
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