Mandatory documentation to legally sell a used car in Spain
11 Jul 2025
Introduction
Selling a used car is not just a matter of price and the vehicle's condition. The legal aspect matters a lot. An error in the documentation can lead to fines, wasting time, or even legal issues with the buyer.
In this article, we provide you with a clear list of all the documents you need to check, deliver, or keep as a professional in the sector. This is ideal whether you are selling to individuals or other professionals.
Documentation You Must Provide to the Buyer
Document | Is it mandatory? | What is it for? |
|---|---|---|
Registration certificate | ✅ Yes | Identifies the owner and allows legal circulation |
Technical sheet with valid ITV | ✅ Yes | Demonstrates that the car is approved and inspected |
Sales contract | ✅ Yes | Legal proof of the transaction between both parties |
Proof of change of ownership or authorization | ✅ Yes | Ensures that the car will change names correctly |
Invoice or proof of payment | ✅ Yes (if you are a professional) | Certifies the transaction and details the VAT/REBU |
Legal warranty or exemption document | ✅ Yes if selling to an individual | Certifies coverage or express waiver |
Documents You Must Keep as a Seller
Copy of the signed contract.
Copy of the buyer's ID/NIE.
Copy of the transfer receipt (model 620/621 if applicable).
Copy of the issued invoice.
Dealcar Advice: Keep all documents for at least 5 years in case there are claims or inspections from the Tax Agency or Consumer Affairs.
Common Errors in Documentation
❌ Not checking the buyer's real identity
This can lead to problems if there are non-payments or subsequent incidents.
❌ Not signing the contract correctly
It must include the date, complete information, signature, and clear terms.
❌ Not informing about the change of ownership on time
If the buyer does not do it, you could receive fines for their use of the vehicle.
❌ Not providing warranty or exemption clause
In sales to individuals, it is mandatory to cover 1 year unless agreed otherwise in writing.
How to Simplify Document Management
Use standardized contract and invoice templates.
Make the ownership change online for greater efficiency.
Use platforms like Dealcar to manage everything from a single panel.
Dealcar Advice: A poorly done process can cost you much more than good management from the start.
Conclusion: No Papers, No Safe Sale
In professional buying and selling, documentation is as important as the car. Don't take chances: follow this checklist, ensure that every paper is in order, and you will avoid claims, fines, or wasting time.
Do you want to automate the change of ownership and store all documents in the cloud?
With Dealcar you can do all this in a few clicks and keep your operations always under control.
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