Most Audi A3 VINs open with WAU (Germany, 2006–2025). Position 11, the plant, shows 2 codes, most often A (66%); a 2026 A3 carries T in position 10. Decoding one also brings up 20 recall campaigns and 659 owner complaints from NHTSA.
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How to read a Audi A3 VIN
Here is a real 2026 Audi A3 VIN from our database, split into its parts:
VIN WAUHUDGY7TA069290 — decoded free on its own report page.
| Position | Section | What it tells you |
|---|---|---|
| 1–3 | WMI | World Manufacturer Identifier — country, manufacturer and vehicle type. |
| 4–8 | VDS | Vehicle Descriptor Section — body style, engine, restraint system, series. |
| 9 | Check digit | A calculated digit that validates the whole VIN. Wrong digit = wrong VIN. |
| 10 | Model year | One character for the model year. Letters skip I, O, Q, U and Z. |
| 11 | Plant | The assembly plant that built the car. |
| 12–17 | Serial | Sequential production number of this exact vehicle. |
Audi A3 VIN prefixes, and when each one was used
Every Audi A3 we have on record, from 2006 to 2025, opens with the same three characters, WAU:
| VIN starts with | Years seen | Built in | Vehicle type | VINs on record |
|---|---|---|---|---|
| WAU | 2006–2025 | Germany | Passenger Car |
Position 11 names the plant. On the Audi A3 it is not one number either — assembly moved between 2 of them over the years:
| Plant code | Years active | VINs on record | Share |
|---|---|---|---|
| A | 2006–2025 | 437 | |
| 1 | 2015–2019 | 216 |
Counted from 657 dated Audi A3 VINs attached to NHTSA complaints, each code checked against the NHTSA manufacturer registry.
Model-year codes for the Audi A3
Position 10 carries the model year, skipping I, O, Q, U and Z. The alphabet comes round every 30 years, which the Audi A3 has not yet outlived: its 19 years still map one-to-one. All 19 model years of the Audi A3, 2006 to 2026, with the character each one carries:
| Model year | VIN character (position 10) | Same character as |
|---|---|---|
| 2026 | T | — |
| 2025 | S | — |
| 2024 | R | — |
| 2023 | P | — |
| 2022 | N | — |
| 2020 | L | — |
| 2019 | K | — |
| 2018 | J | — |
| 2017 | H | — |
| 2016 | G | — |
| 2015 | F | — |
| 2013 | D | — |
| 2012 | C | — |
| 2011 | B | — |
| 2010 | A | — |
| 2009 | 9 | — |
| 2008 | 8 | — |
| 2007 | 7 | — |
| 2006 | 6 | — |
Body and engine characters we see on Audi A3 VINs
Positions 4–8 are the maker's own build code. Across 97 VINs the Audi A3 uses 16 different characters in positions 4, 5 and 8:
| Position | Characters seen on real VINs | Variety |
|---|---|---|
| 4 — body | A (21%) · B (15%) · H (13%) · G (12%) · E (9%) · T (6%) | 6 distinct |
| 5 — series | U (36%) · F (16%) · 8 (16%) · P (9%) · E (7%) · C (7%) | 6 distinct |
| 8 — engine | F (60%) · Y (30%) · M (6%) · P (4%) | 4 distinct |
What a decoded Audi A3 VIN gets you
Behind a Audi A3 VIN: 659 owner complaints and every recall campaign NHTSA has on record:
| Data | For this model | Source |
|---|---|---|
| Recall campaigns | 20 campaigns | NHTSA |
| Owner complaints | 659 filed | NHTSA |
| Fuel economy | 28 mpg combined (avg) | EPA |
| Crash-test ratings | 5 rated model years | NHTSA |
| Model years covered | 19 years | ForCar catalog |
Where to find the VIN on a Audi A3
A Audi A3 VIN normally opens with WAU; the full number sits in four places, and all four must match.
| Where | How to see it | Why it matters |
|---|---|---|
| Dashboard, driver side | Through the windshield, bottom corner | Easiest to check before you touch anything |
| Driver door jamb | Open the door, sticker on the pillar | Also lists tire pressures and build date |
| Under the hood | Firewall or strut tower plate | Survives a windshield replacement |
| Title and insurance | Paper documents | Must match the car — a mismatch means fraud or a swapped panel |
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Frequently asked questions
Is this Audi A3 VIN decoder free?
Yes, with no account. Besides the year, plant and build characters it shows 20 recall campaigns and 659 owner complaints NHTSA holds on the Audi A3.
What year is my A3 by its VIN?
Read position 10: a 2026 A3 carries T, a 2025 A3 carries S, a 2024 A3 carries R.
Where was my A3 built?
Position 11 names the plant. Across 659 dated Audi A3 VINs it reads A 66%, 1 33%.
What does position 4 mean on a Audi A3 VIN?
It is part of the maker's own build code, so read it against this model, not a generic chart. On 97 Audi A3 VINs here, A is the most common character in position 4, on 21% of them.
What if the VIN on the dashboard doesn't match the door jamb?
On a Audi A3 check the prefix first: most genuine ones open with WAU. A plate that starts with anything else, or disagrees with the other copies of the number, needs documents checked before any money changes hands.
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