VIN decoder

Audi VIN check

Audi VINs begin with WAU, WA1, TRU, WUA, WU1.

Those first three characters are the World Manufacturer Identifier. The other fourteen describe the specific vehicle, and all seventeen together are its permanent identity.

Most Audis sold in the UK start WAU for a car or WA1 for a Q-series SUV. The Hungarian-built TT is the notable exception, carrying TRU instead.

The Audi Sport codes are worth knowing if you are buying an RS model. They are used for cars built by the performance division rather than the main line, so they are a useful cross-check on a car being sold as a genuine RS.

Checking a used Audi?

Enter the registration to see the recorded VIN and vehicle identity, plus finance, write-off, stolen, mileage and keeper history.

Audi manufacturer codes

Code	What it means
WAU	Audi car, the standard code for the A range.
WA1	Audi SUV, the Q range.
TRU	Audi Hungary, used for the TT and TTS.
WUA	Audi Sport GmbH car, previously quattro GmbH.
WU1	Audi Sport GmbH SUV.

Models this covers include the Audi A1, A3, A4, A5, A6, Q2, Q3, Q5, TT, RS models. Codes are allocated per manufacturer and plant, so one marque can hold several.

How to read a Audi VIN

Every vehicle built to the international standard since 1981 carries a seventeen character VIN, and it splits into three parts.

Characters	Part	What it tells you
1 to 3	World Manufacturer Identifier	Who built it and where. On a Audi this is WAU or one of the codes above.
4 to 9	Vehicle descriptor section	Model, body style, engine and restraint system, in a format each manufacturer sets for itself. Character 9 is a check digit in some markets.
10 to 17	Vehicle identifier section	The individual vehicle, including the model year code and the plant, ending in a unique serial number.

The letters I, O and Q never appear in a VIN, because they are too easily mistaken for 1 and 0. If you think you can see one, look again.

Where to find the VIN on a Audi

There are normally at least three places to look, and the point is not to find one. It is to find all of them and confirm they agree.

Through the windscreen. A small plate at the base of the glass on the driver's side, readable from outside the car.
In the driver's door aperture. A sticker or riveted plate on the door shut or the B-pillar, usually alongside the tyre pressures and weights.
Stamped into the bodyshell. Under the bonnet on the slam panel or inner wing, or under the boot floor near the spare wheel well.
On the V5C. The logbook records the VIN, and it must match the car.

The exact positions vary by model and year, so check the car rather than assuming. Signs of tampering matter as much as the number itself: a sticker that has been peeled and replaced, rivets that do not match, a stamped number with uneven spacing, or a plate that looks newer than the panel around it.

Why the VIN matters when you are buying

A registration can be changed. A VIN is meant to be permanent, which makes it the anchor for a vehicle's identity and the thing a cloned car struggles to fake convincingly across every location it appears.

Cloning. A stolen car given the identity of a legitimate one of the same make, model and colour. The plates and paperwork look right; the VIN is where it comes apart.
Plate transfers. A registration that has moved between vehicles, which is legal and common, but which breaks the link between the plate and the car's age.
Imports. The manufacturer code says which market a vehicle was built for. An imported car's UK record only starts at UK registration.
Rebuilt vehicles. Cars assembled from more than one donor, where the identity on the paperwork does not describe what is actually in front of you.

A Carpeep car history check cross-references the VIN and the registration and reports outstanding finance, insurance write-off markers, stolen markers, mileage from every MOT, keeper history, plate and colour changes, import and export markers and scrapped status, for £15. See the VIN check page for what the check covers, or the import check if the codes above suggest the car came from abroad.

Confirm the identity before you pay

One registration, one report. Vehicle identity, finance, write-off, stolen, mileage, keepers, MOT and tax.

VIN codes for other makes

Audi VIN FAQs

What does a Audi VIN start with?

A Audi VIN normally begins with one of these World Manufacturer Identifiers: WAU, WA1, TRU, WUA, WU1. Those first three characters name the manufacturer and, in most cases, the plant or vehicle type. The remaining fourteen characters describe the specific vehicle.

Where is the VIN on a Audi?

On almost every modern car there are at least three places to look: stamped into a plate visible through the base of the windscreen on the driver's side, printed on a sticker or plate in the driver's door aperture, and stamped into the bodyshell under the bonnet or under the boot floor near the spare wheel. The exact position varies by model and year, so check all three and confirm they match each other.

Is a Audi VIN check the same as a registration check?

They answer overlapping questions from different directions. The registration is what the DVLA record is keyed on, and it is what a Carpeep report is run against. The VIN is the vehicle's own permanent identity, and cross-referencing the two is how a cloned or re-plated car gives itself away.

What if the VIN on the car does not match the paperwork?

Stop and do not pay anything. A mismatch between the VIN on the car, the VIN on the V5C and the VIN held against the registration is the clearest sign of a cloned, ringed or rebuilt vehicle. It is not a clerical error to shrug off.

How many characters is a Audi VIN?

Seventeen, like every vehicle built to the international standard since 1981. The letters I, O and Q are never used, because they are too easily confused with 1 and 0. A shorter number on a much older vehicle is a chassis number rather than a modern VIN.

World Manufacturer Identifier allocations are published international reference data assigned under ISO 3780. VIN structure follows ISO 3779.