Nico's used car cost him an extra €11,100 — three weeks after buying.
A private sale at €9,800, “gekauft wie gesehen” (sold as seen — a German used-car clause). Three weeks later: engine failure, a tampered odometer, a concealed accident. SignGuard spots these traps in 60 seconds — whether you're the buyer or the seller.
Check your car purchase contract60 sec · free · iOS & Android · no credit card
Car purchase contract check — at a glance
Checking a car purchase contract means reviewing the agreement for a used car for risks before you sign — equally relevant for buyers and sellers in German private sales. Typical risk areas: “gekauft wie gesehen” clauses, odometer statements, exclusion of the Sachmängelhaftung (statutory warranty), and agreed specifications. SignGuard is an AI-powered contract analysis app that flags critical clauses in 60 seconds and explains them with references to the German Civil Code (BGB).
- Most common risks: “Sold as seen” does NOT exclude liability for fraudulently concealed defects (§ 444 BGB); a stated odometer reading can be construed as a binding guarantee (Federal Court of Justice, BGH VIII ZR 78/06); a blanket warranty exclusion is entirely void when a dealer sells to a consumer (§ 476 BGB).
- What SignGuard detects: “sold as seen” clauses in risky combinations, odometer guarantees vs. “as read off the dash”, blanket warranty exclusions, missing deposit receipts, unclear transfer of ownership, missing identification of the registered keeper.
- How it works: Upload a photo or PDF → the AI highlights risky clauses with BGB references and relevant case law → plain-language explanations. Works for buyers AND sellers. GDPR-compliant on EU-based servers, 3 free analyses, no credit card.
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Three steps to a full clause analysis — no lawyer appointment, no hours of reading German law.
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Critical clauses, by perspective
📊 Backed by the German Civil Code (BGB) · buyers + sellers, private salesThe exclusion only covers visible defects — void in cases of fraudulent concealment; hidden defects remain recoverable (§ 444 BGB).
A rolled-back mileage counts as fraudulent misrepresentation — rescission + damages possible (§ 123 BGB · § 437 no. 2 BGB).
“Accident-free” promised, but prior damage concealed → rescission & unwinding of the sale (§ 434 + § 444 BGB).
A commercial seller dodging the statutory warranty — a prohibited circumvention; full 2-year liability applies (§ 476 BGB).
Every stated detail (year, mileage, “full service history”) becomes a binding specification — you're liable despite the warranty exclusion (§ 434 BGB).
“Sold as seen” alone isn't enough — you need a precisely worded warranty exclusion, or you're liable for 2 years (§ 444 BGB).
Without photos or written proof at handover, a later claim is almost impossible to rebut (§ 442 BGB).
Conceal a defect and the exclusion is void — 10 years of liability instead of 2 (§§ 444, 438(3) BGB).
If the analysis flags a high risk, you can forward your contract plus a case summary to an independent lawyer in one tap — connected through the advocado partner network. The initial assessment is free and non-binding; after that, you decide freely on a fixed-fee basis. How the Lawyer Check works →
“I was about to buy a Golf privately for €7,200 — the listing looked spotless. SignGuard scanned the draft contract and instantly raised three red flags: no odometer reading fixed in writing, 'accident-free' not documented, and the seller had 4 other listings (= most likely a disguised dealer). I renegotiated; the 'private seller' walked away. Two weeks later I read that this very seller had been reported for odometer fraud. Damage avoided: ~€5,000.”
Anonymized case study · illustrative figures: €7,200 purchase price + consequential damage · Deep dives from our guides: How to check a used-car purchase contract, step by step (German) · Spotting odometer tampering — 7 warning signs (German) · Bought a car with hidden accident damage — your 4 options (German).
Buying a used car in Germany: inspect the car vs. check the contract (2026)
There are two kinds of checks when buying a used car: the technical condition of the vehicle (ADAC, TÜV) and the legal review of the purchase contract (clauses, warranty). SignGuard is the contract check — together, both protect you from an expensive mistake.
| Tool | What it checks | Focus | Price |
|---|---|---|---|
| SignGuard (iOS app) | Purchase contract (legal) | “sold as seen”, warranty exclusions, odometer statements — §§ 444/434/123 BGB, buyers + sellers | 3 free, then from €4.99/month |
| ADAC used-car check | Vehicle (technical) | Engine, bodywork, accident damage — on site | from ~€120 (less for members) |
| TÜV / DEKRA | Vehicle (technical) | Official roadworthiness inspection, used-car certificate | from ~€80–150 |
| Specialist traffic-law attorney | Legal dispute | Enforcement in rescission & fraud cases | from ~€200 |
Rule of thumb: For the technical condition, use ADAC or TÜV (test drive, workshop check). For the legal soundness of the purchase contract — whether “sold as seen” actually holds, whether the warranty exclusion is valid — use SignGuard (3 free analyses, for buyers and sellers). In an acute legal dispute, a specialist attorney handles enforcement.
Frequently asked questions about German car purchase contracts
“Gekauft wie gesehen” — am I really unprotected as a buyer?
What can I do about a tampered odometer?
Selling privately: how do I protect myself against claims?
Is there a statutory warranty in a private sale?
Defects after 6 months — who has to prove what?
Which online service checks a German used-car purchase contract for legal risks?
How much does SignGuard cost?
Start for free — no credit card required.
- 3 contract scans
- Clause classification
- Risk score
- Contract manager
- Unlimited scans
- Deadline reminders
- Cancellation templates
- Cost overview
- AI contract assistant
- All Pro features
- Up to 4 users
- Family sharing, analyses included
- PDF export for your lawyer
💚 Cancel the monthly plan anytime · no credit card · all plans in the Apple App Store
Ready to check your car purchase contract?
60 sec · free · backed by the German Civil Code · GDPR-compliant
Download on the App StoreImportant legal notes
Illustrative figures: All € amounts (€11,100 hero story, €8,000 “sold as seen”, €7,500 odometer, €12,000 accident, €5,000 testimonial) are illustrative example calculations based on typical private car sales (purchase prices €5,000–15,000). Actual damages vary widely depending on the vehicle, the defect, and the evidence available.
Legal basis: The provisions cited (§ 444 BGB fraudulent concealment, § 434 BGB material defect, § 437 BGB buyer's remedies, § 442 BGB buyer's knowledge, § 476 BGB anti-circumvention, § 123 BGB rescission) reflect the German Civil Code as of 2026. Sources: German consumer advice centers (Verbraucherzentrale), ADAC legal guidance.
Case study: The case shown (“Anna B., teacher, Stuttgart”) is an anonymized example illustrating a typical buyer scenario. Personal details are fictional.
Not legal advice: SignGuard is a digital contract manager with AI-assisted clause analysis. The app is for information purposes and does not replace advice from a lawyer. In a dispute over defects, fraud, or unwinding a purchase, consult a consumer advice center, the ADAC, or a lawyer specializing in traffic law. And if the analysis flags a high risk: the Lawyer Check connects you, right from the app, with a free initial assessment by an independent lawyer through the advocado partner network.