1. Introduction: Understanding the German Leasing Landscape
German leasing law creates a complex triangle, but it is not a trap if you navigate it with precision. While lessors try to shift the burden of defects onto you, the BGB ensures that the “Hand-Off” must be fair and functional.
In the German legal system, financial leasing is characterized by a “triangular relationship” between the Lessee (Leasingnehmer), the Lessor (Leasinggeber), and the Supplier (Lieferant). It is often frustrating for a lessee to realize that while they pay monthly rates to the lessor, they cannot directly demand repairs from them.
This structure exists for a specific commercial reason: the lessor acts merely as the financier, providing the capital for the object, while the supplier is the technical expert responsible for the quality of the goods. Consequently, while a leasing contract is legally a form of rental (Mietvertrag), the General Terms and Conditions (AGB) typically feature a Haftungsfreizeichnung—an exclusion of the lessor’s liability for defects. In exchange, the lessor assigns their own rights against the supplier to you, shifting the battleground from Rental Law (Mietrecht) to Sales or Work Law (Kauf- oder Werkvertragsrecht).
2. What Constitutes a Defect? (Mangel vs. Non-Defect)
A defect (Mangel) exists when the leasing object deviates from the Leistungssoll—the contractually agreed condition or the quality required for its intended use (Grüneberg/Retzlaff BGB § 634 Rn. 14). As a legal educator, I must emphasize that not every issue with an object is a “defect” in the eyes of the law.
Is it a Legal Defect?
| Type of Issue | Legal Classification |
| Deviation from contractually agreed quality | Sachmangel (Material Defect) |
| Limitation of legal rights/claims (e.g., third-party rights) | Rechtsmangel (Legal Defect) |
| Non-delivery or delayed delivery | Performance Disruption (Nichterfüllung) |
| Normal wear and tear (Verschleiß) | Non-Defect |
| Lack of economic profitability or low demand | Economic Risk (Verwendungsriskio) |
| Issues due to improper use by the lessee | Non-Defect |
Note: Non-delivery or late delivery are handled under general performance disruption law (e.g., § 320 BGB or § 543 BGB) rather than defect law, as the object has not yet been “accepted” in a defective state (Grüneberg/Weidenkaff BGB Einführung Rn. 55).
3. The Burden of Proof: What You Must Demonstrate
To successfully assert your rights, the law places the burden of proof on you. However, the requirements for laypeople are designed to be manageable:
- The Target Condition (Leistungssoll): You must state what the object was supposed to do or look like.
- The Actual Condition: You do not need to provide a technical diagnosis. It is sufficient to describe the symptoms of malfunction (e.g., “the engine loses power at 80km/h”).
- Sphere of Responsibility: You must show the defect originates from the supplier/lessor’s domain and is not a result of your own misuse or environmental factors under your control .
The Primary Action Rule (Primärverfolgung) In financial leasing, you are generally required to pursue the supplier first. This means you must demonstrate that you have attempted to resolve the issue with the technical expert before you can successfully turn back to the lessor to stop payments or reverse the lease.
4. Your Legal Rights: The Impact of AGB (General Terms & Conditions)
Under statutory law (§§ 536–536b BGB), the lessor would be your primary point of contact. However, the standard Haftungsfreizeichnung (liability exclusion) in the AGB is only valid if the lessor provides a “sustainable” substitute. This is done by assigning (Abtretung) or authorizing the exercise (Ermächtigung) of rights against the supplier.
Critical AGB Limits:
- Insolvency Risk: The lessor cannot shift the risk of the supplier’s insolvency to you. If the supplier goes bankrupt, the liability exclusion in your lease becomes invalid, and your original rental law rights against the lessor (§§ 536 ff. BGB) “snap back” into effect.
- Effectiveness of Assignment: If the assignment is “hollow” (e.g., because the supplier’s liability was already excluded in the purchase contract), the lessor’s liability exclusion is void.
- Reinterpretation (Umdeutung): If a formal assignment fails, the law may reinterpret the situation as an “authorization” (Ermächtigung), potentially entitling you to reimbursement for the costs of litigation.
5. Procedural Roadmap: Prerequisites for Success
Notification (Mängelanzeige)
Pursuant to § 536c BGB, you must notify the lessor immediately of any defect. Failure to do so suspends your rights and may make you liable for damages if the delay causes the defect to worsen.
Setting a Deadline (Fristsetzung)
For rights like withdrawal (Rücktritt) or damages, you must usually set a reasonable deadline for repair or replacement (§§ 281, 323 BGB). This can only be skipped if the supplier definitively refuses performance, the repair fails multiple times, or it is otherwise unreasonable (§ 636 BGB).
Payment Refusal and the § 320 BGB Defense
In cases of non-delivery, you can immediately use the defense of non-performance (§ 320 BGB) to stop payments. However, for defects, you generally only have a right to temporarily withhold payments once you have officially filed a lawsuit against the supplier.
Withdrawal & Reversal (§ 313 BGB)
If you successfully withdraw from the purchase contract with the supplier, the “basis of the transaction” for the lease contract collapses (§ 313 BGB). To trigger the full reversal, you must formally declare a reclaim of payments (Zahlungsrückforderung) against the lessor, documented by your successful withdrawal from the supplier agreement.
6. Special Focus: Rent Reduction (Minderung)
Unlike withdrawal, a rent reduction (§ 536 BGB) occurs “kraft Gesetzes” (by operation of law). It is an automatic reduction of your obligation to pay, provided the following are met:
- A Defect exists (Deviation from Leistungssoll).
- Significant Impairment: The defect must more than slightly hinder the use of the object.
- Notification: You have informed the lessor per § 536c BGB.
- No Exclusion: You did not accept the object without reservation despite knowing the defect (§ 536b BGB).
No formal deadline is required for Minderung, but the reduction only applies for the period the defect exists and is reported.
7. Summary Checklist for Lessees
- [ ] Review Contract/AGB: Is the exclusion of rental law liability (§§ 536–536b BGB) paired with a valid assignment of supplier rights (§§ 434 ff. or 633 ff. BGB)?
- [ ] Check Assignment “Sustainability”: Is the assignment “tragfähig”? Ensure it isn’t blocked by liability exclusions in the supplier’s contract.
- [ ] Assess Insolvency Risk: Is the supplier solvent? (The lessor remains liable if the supplier is insolvent).
- [ ] Notify Lessor: Have you sent a formal Mängelanzeige according to § 536c BGB?
- [ ] Identify the Issue: Is this a technical Mangel or Nichterfüllung (non-delivery)?
- [ ] Set Deadline: For withdrawal or damages, have you set a reasonable deadline according to §§ 323, 281 BGB?
- [ ] Check for Authorization: If assignment is problematic, do you have an Ermächtigung to act?
- [ ] Initiate Primary Action: Have you pursued the supplier? Note: Payment refusal usually requires filing a lawsuit.
- [ ] Document Everything: Keep a log of “symptoms,” repair attempts, and all correspondence for the § 313 BGB reversal.
8. Conclusion: The Importance of Documentation
The “triangular relationship” of leasing means that the outcome of your dispute with the supplier binds your relationship with the lessor. If a court finds the supplier is not liable, you remain obligated to the lessor. Meticulous documentation of every repair attempt and every deadline is your only protection. Remember: if you successfully withdraw from the supplier contract, you must explicitly demand the reversal of the lease rates from the lessor to ensure the protection of § 313 BGB.
If you are dealing with a defective lease or a supplier who has gone silent, do not stop your payments without a clear legal strategy. Missing a notification or a filing deadline can turn a simple defect into a financial disaster.
Contact the Law Firm of Kiril Stawrew If you need a professional review of your leasing contract or guidance on how to assert your rights against a supplier, I invite you to contact my office in Berlin. We offer a first consultation free of charge to help you navigate these German legal structures and find a practical path forward.