Car Auctions in Germany: Copart, BCA, AUTO1 & AutoBild — Which Platform Works for Resale?
Action plan (checklist)
- Stop using the car if the defect is safety-relevant or may cause further damage.
- Document the symptoms: photos/videos, noises, warning lights, OBD error codes.
- Get an independent diagnosis at a workshop or from an expert, with a written report and cost estimate.
- Inform the seller in writing (e-mail/letter): describe the defect, attach the report and set a reasonable deadline for a solution.
- Keep all communication (messages, invoices, reports) — this will be your evidence package.
Dealer vs private seller — what’s the difference?
Dealer / autohaus. As a rule, statutory liability for defects (Gewährleistung) applies — the seller is usually obliged to offer rectification (Nachbesserung) within a reasonable time. Details depend on the contract and whether you bought as a consumer or as a business.
Private seller. Often sells the car “as is” and limits liability. If a defect was knowingly concealed or the car is not as described (promised features/condition), your chances are better — but you will need strong evidence.
Settlement options
- Nachbesserung — repair paid by the seller or as agreed.
- Minderung — price reduction if repair is not reasonable or you accept the defect.
- Rücktritt — cancelling the contract in serious cases (major defect, no repair within a reasonable time).
- Kulanz — goodwill from the seller/dealer (e.g. partial participation in repair costs).
Before you decide, check the contract conditions and make sure all offers and agreements are documented in writing.
How to collect evidence
- Independent diagnostic report + OBD printout, measurements, photos/videos.
- Timeline: when you noticed the issue, how it appears, under which conditions.
- Communication with the seller, screenshots of the ad, promised options/condition.
- Repair cost estimate from a workshop or expert (Gutachter), if needed.
Tip: don’t wait too long before notifying the seller — the earlier you report the problem and provide a report, the better your chances of a quick and fair solution.
How we help
- Post-purchase diagnostics: full check-up and structured report.
- Support in communication: clarifying positions, translating and formulating proposals for settlement.
- Cost/benefit analysis: whether repair, price reduction or withdrawal is the smarter option.
- Transport: moving the problematic car to a workshop or back to the seller.
Need an objective report?
We carry out diagnostics, prepare photo/video evidence and help you prepare for negotiations with the seller.
Book a diagnosis View pricesRelated posts
Car Auctions in Germany: Copart, BCA, AUTO1 & AutoBild — Which Platform Works for Resale?
Warranty When Buying a Car in Germany — What Is Really Covered and How to Check It