Certificate of conformity by make Audi

The Audi vehicles that reach us are on average more heavily equipped than other imports. Option packs, large wheels, adaptive suspension, upgraded brakes: from a type-approval point of view, none of this is cosmetic.

Those options change the gross weights, the tyre sizes and sometimes the top speed recorded on the certificate. And that is exactly what the registration office compares against the actual vehicle. An A6 Avant on 20-inch wheels will not carry the same values as a base A6, and any gap between certificate and vehicle stalls the file. Send us the VIN rather than the seller’s advert: only the VIN describes the car that actually left the factory.

The typical file is an A4 or Q5 from a German fleet, three to five years old, resold by a dealer. The certificate never left the leasing company, and the dealer has no particular reason to supply it. We request it from the group directly using the VIN. What we verify before submitting an Audi request is the consistency between options and approved values. An A6 with the S line pack, 20-inch wheels and air suspension does not carry the same weights or tyre sizes as the entry-level version. If the buyer sends us the advert rather than the registration document, the discrepancy surfaces at the end of the file — too late. So we always ask for the foreign registration document, not the seller’s description.

A Audi certificate is usually issued by the group type-approval department, shared across sister brands.

Where to find the chassis number (VIN) on a Audi

A certificate covers one vehicle only, identified by its chassis number (VIN). The safest place to read it is field E of the foreign registration document. On a Audi, it also appears:

• at the base of the windscreen, driver’s side, readable from outside
• on the manufacturer’s plate on the driver’s door pillar
• stamped under the bonnet, on the front crossmember

A VIN never contains the letters I, O or Q: mistaking one for a 1 or a 0 is enough to send the search astray.

Most frequently imported Audi models

The Audi vehicles we handle most often come from Germany, from Austria and from Belgium.

The requests we receive mostly concern:

• Audi A3
• Audi A4
• Audi A6
• Audi Q3
• Audi Q5
• Audi Q7
• Audi e-tron
• Audi A1

The rest of the EU-approved Audi range is handled the same way.

Audi and the eCOC: what changes in 2026

Since 5 July 2026, Audi has been sending conformity data for its new vehicles to the approval authorities in eCOC format. Your used Audi is not affected: you need the ordinary COC, issued exactly as before. Paper and printouts of the eCOC remain accepted until 29 November 2026 at the latest. Understand the eCOC.