Hidden defects and garage owners’ liability: shifting into second gear!

Note on Cass. civ. 1re, 12 November 2026, no. 24-11.117, FS-B

Is a garage owner who fits a part affected by an undetectable defect liable, even though it committed no fault?

Yes, answers the First Civil Chamber of the French Cour de cassation: while a garage owner answers for its workmanship only in the event of fault, albeit presumed fault, it is strictly liable for the failure of the parts it supplies, subject to its recourse against the manufacturer.

The Court appears to take note of the scholarly criticism levelled at its refusal to let the customer rely on the warranty against hidden defects. In so doing, it establishes a strict-liability warranty… in all but name.

The facts

A gearbox is supposed to last as long as the vehicle it drives. The manufacturer, for that matter, recommends no maintenance of this component1. In the present case, the gearbox of Mr and Mrs M.’s Clio had decided to prove more temperamental.

Bought new in 2000, the car had its automatic gearbox replaced for the first time in 2009. The garage sourced the part directly from the diamond-badged manufacturer. Seven years and 18,792 kilometres later, the malfunctions returned. According to the court-appointed expert, the sole cause of the trouble lay in a defect in the gearbox fitted in 2009, a defect described as undetectable by the garage1.

The owners then sued the garage, which brought a third-party claim against Renault. The Aix-en-Provence Court of Appeal dismissed their claims, on the ground that the garage had shown that it had committed no fault.

The Cour de cassation’s solution

The Aix judges’ solution was not without common sense. For a long time, the Cour de cassation subjected garage owners to an « obligation de résultat » (an obligation to achieve a result) entailing « both a presumption of fault and a presumption of causation »2. The weakness of the formula is well known: an obligation of result from which the debtor is released by proving the absence of fault is not really one.

In 2022, the First Civil Chamber changed its position. Noting that « the reference to such an obligation and to such a liability regime is not justified », it held that the garage owner’s liability « is incurred only in the event of fault », subject to a twofold presumption of fault and causation3. Exit the obligation of result. Exit strict liability. The Court was thereby responding to a long-standing invitation from legal scholars4. In practice, however, the solution has not proved any more lenient for garage owners5, to the point that it has been written that the Court « seems to oscillate between rigour and leniency »6.

It was on that case law that the lower courts relied.

Since the defect was undetectable, our garage owner, who had merely fitted the gearbox sold by Renault, had committed no fault.

And yet the Cour de cassation quashed the decision, on the basis of former Articles 1147 and 1315 and Article 1787 of the French Civil Code: the general law of contract and the special law of the contract for work (contrat d’entreprise).

The Court’s reasoning distinguishes two types of liability on the part of the garage owner.

As regards its services, the garage owner is liable « in the event of fault », fault and causation being presumed where malfunctions arise or persist after its intervention.

By contrast, the garage owner is liable « as of right for the failure of the parts supplied in the course of those services », subject to its « recourse against the manufacturer »7.

Accordingly, where the garage owner fits a part purchased from the manufacturer, it is strictly liable for the failure of that part and cannot escape liability on the ground that the defect was undetectable.

Two regimes, then, for a single debtor. One could have imagined a distributive application of sales law (for the hidden defect affecting the gearbox) and of the law of the contract for work (for the fitting services).

That is not the option chosen by the Court, which prefers to remain on the sole ground of the contract for work.

A warranty against hidden defects in all but name

The difficulty is that the Civil Code’s regime of louage d’ouvrage (commonly referred to in practice as a contract for work or, at times, a contract for services) provides for no warranty against hidden defects.

This may be an oversight or a deliberate choice on the part of the legislature.

As a result, where the customer receives a defective thing from the contractor, it cannot bring the action for hidden defects against the latter. Confined to the general law of the contract for work, it is left with contractual liability alone. Yet, as we have seen, such liability yields to proof of the absence of fault. In the present case, no fault could be held against our garage owner, which had fitted, in accordance with good practice, an inherently defective part.

In a 2022 decision, the Commercial Chamber had held that, « in their direct relations, the action for hidden defects is not available to the customer against the contractor »8. We had at the time spoken out against that solution, which is very harsh on the customer.

To deprive the customer of the statutory warranty amounted, we wrote, to placing it « in a far less enviable position than that of a buyer, especially where its counterparty is a professional ». And we asked: « Why should the person who receives ownership through a contract for work, because the thing was made to measure, be treated less well than the person who acquired it through a contract of sale, because the thing was standardised? »9.

The dividing line is nonetheless a thin one. That same year, in a case concerning the redevelopment of the place de Catalogne in Paris, the Third Civil Chamber had upheld the characterisation of a contract for work in respect of catalogue floodlights, on the ground that the customer had required an additional protective coating and the shortening of the mounting brackets10.

In the present case, Advocate General Blandine Mallet-Bricout quoted our criticism at length before concluding: « These arguments seem convincing to me where the contractor selects and supplies a part necessary for the performance of its service »11.

Duly noted: the customer must be granted a warranty against the hidden defects affecting the thing of which it has received ownership through the contract for work.

Two routes were open:

  • the first was to extend the sales-law warranty against hidden defects to contracts for work that transfer ownership;
  • the second was to establish an equivalent judge-made warranty.

Rather than extending Article 1641 to the contract for work, which would have required its regime to be determined, the time limit of Article 1648 included, Ms Mallet-Bricout proposed the creation of a judge-made « obligation de garantie » (warranty obligation), based on risk and not on fault11.

The Court followed her.

The customer thus obtains the protection we were calling for, but by a roundabout route.

It does not seem to lose out in the process. The action in contractual liability escapes the two-year time limit of Article 164812.

On a more theoretical level, one may regret that our gearbox, a standardised product (“off the peg”, as opposed to “made to measure”) whose supply ought to be likened to a sale, is here apprehended through the contract for work.

Lastly, as a matter of fairness, it would be odd for the garage owner to answer for the failure of a part whose defect it could not detect, while the seller of that part (the manufacturer) went unscathed. The reality is more subtle.

In 2025, the First Civil Chamber held that knowledge of the defect is to be assessed in the person of the first buyer, who, if a professional, « is presumed to know of the defect »13. It follows that, if there is no warranty against hidden defects in the first sale, that warranty cannot be passed on to the sub-buyer. Transposed to a chain made up of a sale and a contract for work, the rule could deprive the customer of any effective action against the manufacturer. Without a warranty owed by the garage owner, the Advocate General observed, the customer would have « no effective action against anyone »14.

That is why the First Civil Chamber takes care expressly to reserve the garage owner’s recourse against the manufacturer. The repairer is strictly liable « subject to its recourse against the manufacturer ».

The garage owner’s liability has shifted into second gear. It remains to be seen where the road will lead and, in particular, whether, as the Stoffel-Munck preliminary draft proposes15, it would not be advisable to enshrine a genuine warranty against hidden defects in the contract for work.

Takeaways

  • A garage owner answers for its services in the event of fault, fault and causation being presumed where malfunctions arise or persist after its intervention.
  • It is strictly liable for the failure of the parts it supplies, even if the defect was undetectable, subject to its recourse against the manufacturer.
  • The customer thus regains, through contractual liability, the equivalent of the warranty against hidden defects which the Commercial Chamber denies it against the contractor.

Notes

  1. Report of the reporting judge, S. Ittah, and opinion of Advocate General B. Mallet-Bricout, preparatory documents published with the decision. courdecassation.fr. ↩
  2. Cass. civ. 1re, 2 February 1994, no. 91-18.764, Bull. civ. I, no. 41. Légifrance. ↩
  3. Cass. civ. 1re, 11 May 2022, no. 20-18.867, FS-B, §§ 3 and 4; see also, same day, no. 20-19.732, FS-B. Légifrance. ↩
  4. J. Traullé, « La motivation des arrêts de la Cour de cassation », D. 2022. 1567; see also P. Jourdain, « Responsabilité du garagiste : la clarification de la Cour de cassation », RTD civ. 2022. 631; P. Gaiardo, « À la recherche d’une clarification du régime de responsabilité du garagiste », D. 2022. 1789. ↩
  5. Cass. civ. 1re, 16 October 2024, no. 23-11.712, FS-B (neither uncertainty as to the origin of the breakdown nor the difficulty of detecting it rebuts the presumptions); Cass. civ. 1re, 25 June 2025, no. 23-22.515, FS-B (proof that the intervention was limited at the customer’s request and that the customer was warned); Cass. civ. 1re, 25 June 2025, no. 24-10.875, FS-B (repair not in accordance with good practice, even at the customer’s request). Légifrance. ↩
  6. M. Dugué, « Responsabilité du garagiste réparateur : une obligation de moyens (trop) renforcée ? », RDC 2025, no. 4, p. 12. Lextenso. ↩
  7. Cass. civ. 1re, 12 November 2026, no. 24-11.117, FS-B, ECLI:FR:CCASS:2026:C100653, § 5. courdecassation.fr. ↩
  8. Cass. com., 29 June 2022, no. 19-20.647, F-B. Légifrance. ↩
  9. L. Thibierge, « Heurs et malheurs de la garantie des vices cachés », RDC 2022, no. 4, p. 35, note on Cass. com., 29 June 2022, cited above. ↩
  10. Cass. civ. 3e, 20 April 2022, no. 21-14.182, FS-B; L. Thibierge, « De la vente et du contrat d’entreprise : fiat lux ! », RDC 2022, no. 3, p. 37. Légifrance. ↩
  11. Opinion of Advocate General B. Mallet-Bricout, cited above; the quotation from our note appears at pp. 10-11. ↩
  12. French Civil Code, Article 1648, para. 1. Légifrance. ↩
  13. Cass. civ. 1re, 3 September 2025, no. 24-11.383, B. Légifrance. ↩
  14. Supplementary opinion of the Advocate General, cited above. ↩
  15. Preliminary draft reform of the law of special contracts (Ph. Stoffel-Munck, chair), July 2022, Article 1789: « L’entrepreneur a, comme le vendeur, l’obligation de délivrer l’ouvrage au client. De même, il répond des vices ou défauts de conformité affectant l’ouvrage, soit qu’ils aient été cachés lors de la réception, soit qu’ils aient fait l’objet de réserves de la part du client. » ↩