Italy's Digital Ownership Certificate (CDPD) Explained
CDPD, paper certificate and Documento Unico: how they differ, how to view yours via QR and ACI code, what to do if lost, and a transfer checklist.

If you are buying or selling a used car in Italy, sooner or later you will ask: where is the certificate of ownership? For many cars registered since 2015 the answer is that it does not exist on paper at all. It is a digital certificate, the CDPD, held in the ACI archives. Since 2021 there is also a Documento Unico. Knowing how they differ saves you headaches at the ownership transfer.
What the certificate of ownership is for
The certificato di proprietà (CdP) records who owns a vehicle in the PRA, Italy's public vehicle register, and what its legal status is, for example any mortgage or administrative hold. It replaced the old foglio complementare in 1994. It is not the same as the libretto di circolazione, which holds technical data and shows the car may be driven. In short: the libretto is about the road, the certificate is about ownership.
When you sell to a private buyer, you must prove you own the car, and this certificate is the proof. That makes it the most important document in a passaggio di proprietà.
The CDPD: digital ownership certificate
Since 5 October 2015 the PRA issues the certificate in digital form only. The CDPD is not printed and stored in a drawer: it lives in ACI's information systems. The practical benefit is that it cannot be lost, stolen or forged like a sheet of paper, and there is no duplicate to request.
When an event changes the registered owner (first registration, transfer, inheritance) the system generates the CDPD and gives the owner a receipt with a personal access code. That code is your key, so keep it safe.
How to view your CDPD online
According to ACI guidance and the specialist press you have two main routes:
- QR code: scan the code printed on the receipt with your phone and the certificate opens.
- ACI website: in the CDPD section, enter the access code from the receipt, which AutoScout24 describes as 22 characters and case sensitive. You can alternatively use the certificate's unique ID (ID-CDPD).
You can view or download the PDF. If the vehicle's legal status has changed since issue, for instance through an administrative hold, the online consultation flags it. That is handy for buyers too, but the safest check remains a PRA search on the licence plate.
Does this car have a CDPD or a paper certificate?
ACI offers a tool that tells you whether a vehicle's certificate is digital or paper. As a rule of thumb:
- Cars registered or transferred after 5 October 2015: probably a CDPD.
- Older cars never transferred since: a paper certificate may still exist, often kept by the seller or in the glovebox.
If the seller says the certificate is in the car, ask to see it before agreeing anything and compare its details with the libretto.
The Documento Unico: what changed in 2021
The Documento Unico di circolazione e di proprietà (DU) merges the technical data of the libretto and the ownership data in one document. After several postponements it came fully into force on 1 October 2021, according to the sources we checked. Documents issued earlier remain valid, so you do not need to replace them on your own. But when you carry out a new operation on the vehicle, such as a transfer or a duplicate after loss, the document you receive is the DU.
For buyers, that means that after the transfer the old libretto and certificate are replaced by the DU, delivered or collected according to the counter's procedure. Sellers simply need to prove ownership with whatever document they hold.
What to do if you lose the document
If a paper certificate is lost, stolen or damaged, you apply for a Documento Unico at the Motorizzazione or at a Sportello Telematico dell'Automobilista (STA). You normally need:
- the unified application form, available from the ACI or Portale dell'Automobilista sites;
- a police report of theft or loss, or a substitute declaration, unless the document is simply too deteriorated, in which case you bring the damaged one;
- a photocopy of the ID of the owner and of any delegate.
On costs, AutoScout24 quotes Motorizzazione fees of about 10.20 euro and a 32 euro stamp duty due only when the DU is issued because the old document was destroyed or deteriorated, plus any agency fee. Treat these as indicative: tariffs change and should be confirmed at the counter. For a recent vehicle with a CDPD you usually do not even need a police report, because the document can be viewed online.
Ownership transfer: a practical checklist
If you are selling:
- Confirm the ownership document exists and is in your name (CDPD, paper or DU).
- Check for holds, mortgages or other flagged issues.
- Get ready for the signature authentication on the sale deed: after it, the buyer has 60 days to file the transfer.
- Keep a copy of the authenticated deed and the receipt.
If you are buying:
- Ask for the ownership document and match it against the libretto and the seller's ID.
- Run a PRA search on the plate to check owner and encumbrances.
- Use an STA or agency and ask for a written quote that separates taxes from fees.
- Remember that official costs depend on the vehicle's power in kW and the province.
Common mistakes
- Paying before seeing the document. Never hand over a deposit without seeing a valid ownership document in the seller's name.
- Assuming the seller is the owner. If the registered owner is someone else, you need a proper power of attorney or deed.
- Ignoring legal status. An administrative hold or mortgage stays attached to the vehicle.
- Mixing up libretto and certificate. A valid libretto does not prove ownership.
The takeaway
The digital certificate has made life simpler: no paper to lose, access by QR or code, and a consultation that also shows encumbrances. Since 2021 the Documento Unico completes the picture, but older documents stay valid until the next operation on the vehicle. Before buying or selling, check which document type applies, run a PRA search and ask for a clear quote. For current figures, always confirm with ACI or an authorised counter.
If you are thinking of selling your car, having the paperwork ready makes your listing more credible and the negotiation faster, and on VendiVoce you can post it in a few minutes.
Fonti / Further reading
- AutoScout24, Certificato di Proprietà: what it is and what to do if lost [1]
- Motor1 Italia, Digital ownership certificate: how to view it [2]
- Lentepubblica, Documento unico di circolazione explained [3]
- Motorbox, Documento unico di circolazione e proprietà: what changes [4]
- Portale dell'Automobilista, cost of the ownership certificate [5]
Further reading
- Certificato di Proprietà o CdP: cos'è, cosa fare se smarrito, come si scarica — AutoScout24
- Certificato di Proprietà digitale, le dritte per consultarlo — Motor1 Italia
- Documento unico di circolazione: che cos'è e cosa si rischia senza — Lentepubblica
- Documento unico di circolazione e proprietà: cosa cambia — Motorbox
- Quanto costa oggi il certificato di proprietà dell'auto — Automobilista.it
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