Where is the VIN in the Audi A3?

This guide covers the VIN (vehicle identification number) locations on the Audi A3 (8Y) produced between 2021–2021, including the quick-to-check dashboard plate and the more hidden body stamping in the engine bay.

Chassis Number Locations

Lower windshield (dashboard VIN plate)

• Where to look: Stand outside the car and look through the bottom corner of the windshield on the left side (driver’s side). The VIN is on a plate visible behind the glass.
• Access: Low to Medium. No tools needed, but reflections/glare from the windshield can block the characters.
• Note: This location is consistent and easy to verify during inspections.
• Tip: If glare washes out the digits, scan it instantly with your phone camera so you don’t misread similar characters like B/8 or S/5.

B-pillar / door jamb VIN sticker

• Where to look: Open a front door and check the door aperture (B-pillar/door jamb area) for a black or silver VIN sticker that also lists paint codes and axle weights.
• Access: Low. Usually clean, vertical, and easy to photograph.
• Note: Sticker placement can vary by market (left or right side of the car), so check both door openings if you don’t see it immediately.
• Tip: This is one of the easiest spots to capture—use the free VIN reader to grab the full 17 characters cleanly without typing.

Front right strut tower (chassis stamping in engine bay)

• Where to look: In the engine bay on the front-right strut tower / fender apron area (right side of the vehicle). The VIN is stamped into the metal, but it’s hidden under a plastic trim flap and the rubber weather seal. Locate the small “window” area in the plastic near the fender, lift the rubber seal, then peel the plastic flap back to expose the stamping.
• Access: High. The stamping is obscured, often dusty, and the flap casts a shadow—bring good light and be ready to move trim carefully.
• Note: On RHD cars the “easy-to-stand-at” side changes, but the stamping is still on the front-right of the vehicle (right side as viewed from the driver’s seat).
• Tip: Because this spot is dark and the characters can look faint, scan it with Flashlight + high-contrast OCR after lifting the flap so the camera can pick up the stamped text.

Trunk / spare wheel well VIN sticker

• Where to look: Open the trunk and lift the floor carpet/cover. Look for a paper VIN sticker attached to the metal floor of the spare wheel well (or near the tire repair kit area).
• Access: Medium. You may need to clear cargo and lift a heavy floor panel; paper stickers can be scuffed or moisture-damaged.
• Note: This sticker is commonly identical to the one found in the service documentation.
• Tip: If the sticker is worn or partly torn, capture it with the phone scanner so you can zoom and confirm characters without guessing.

VIN in the infotainment (MMI)

• Where to look: On the infotainment screen, the VIN can be displayed in the vehicle/service information area.
• Access: N/A. Menu layouts vary by model year and system version.
• Note: Use this as a cross-check only—always match it against a physical VIN on the body.
• Tip: After you find a physical VIN, scan it and compare the decoded result to what the car shows in the menus to catch mismatches.

Video Guide

Video Tutorial: How to find the locations of your Vehicle identification number (VIN

▶ Watch Audi A3 VIN Location Guide

• Shows the windshield VIN, door jamb sticker, trunk sticker, and how to lift the trim to reveal the engine-bay strut-tower stamping.

Common Problems & Troubleshooting

• Windshield VIN glare: If sunlight reflects off the glass, change your viewing angle, shade it with your hand, or scan it from closer range.
• Engine-bay stamping is hidden/dark: Lift the rubber seal and plastic flap fully, wipe dirt off the metal, and use a strong light so the stamped characters stand out.
• Sticker vs. stamped VIN mismatch: Door/trunk stickers can be replaced—when buying a car, always confirm the stamped body VIN matches the windshield plate and paperwork.

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This guide covers the VIN (chassis number) locations on the Audi A3 8V, produced between 2013 and 2020, with the exact spots you can physically check and scan.

Chassis Number Locations

1) Engine Bay – Chassis Stamp (hidden under rubber seal)

• Where to look: Open the hood and go to the right side of the engine bay (vehicle right, as you sit in the car). Locate the metal suspension strut tower / fender apron area where the metal runs parallel to the fender. The VIN is stamped into the metal but covered by a soft rubber/plastic weatherstrip—pull/lift the weatherstrip up and aside to reveal the alphanumeric stamping.
• Access: High difficulty. It’s completely obscured by the trim seal, and the channel often collects dirt and leaves—wipe/scrub the area before trying to read it.
• Note: The inspection vehicles were LHD. On many MQB-platform cars, this stamping is still found on the right-side engine-bay structure—so don’t assume it changes with steering position.
• Tip: Because the stamp is often dirty and low-contrast, use High Contrast AI Mode to scan it directly with your phone after you lift the rubber seal.

2) B-Pillar – Door Jamb Data Label (sticker)

• Where to look: Open the front passenger door and look on the B-pillar door jamb, low down. You’ll see a black/silver data sticker with printed vehicle information, including the VIN.
• Access: Low difficulty. The label is high-contrast and easy to read, but it sits low, so you’ll need to crouch and hold the camera steady.
• Note: Works the same on Sportback body style as shown in the inspection.
• Tip: To avoid misreading characters while crouched, use the free VIN reader and let OCR capture the sticker cleanly.

3) Windshield – Visible VIN plate (through glass)

• Where to look: From outside the car, check the lower corner of the windshield on the left side (vehicle left). The VIN is visible through the glass on a standard VIN plate.
• Access: Medium difficulty. Easy to find, but glare/reflections and dirty glass can make characters hard to read.
• Note: Best checked in shade or with your body blocking reflections.
• Tip: If glare is washing out the digits, capture it with your phone instead of transcribing it by hand.

4) Boot/Trunk – Vehicle data sticker (possible location)

• Where to look: Some Audi/VW vehicles also have a VIN/data sticker in the boot, often near the spare wheel well/floor area under the trunk mat.
• Access: Varies—may require lifting the floor panel and moving cargo.
• Note: This spot wasn’t demonstrated in the validated A3 videos, so treat it as a possible backup if your door sticker is missing.
• Tip: If you’re bent over the boot floor and can’t comfortably write it down, scan the label instead to avoid mistakes.

Video Guide

Video Tutorial: Where is the VIN number of my AUDI A3 8V ( 2012 – 2020 ) | All Possible VIN Number Locations

▶ Watch Audi A3 VIN Location Guide

• Shows the passenger-side B-pillar sticker, the engine-bay stamp (including lifting the rubber seal), and the windshield VIN.

Video Tutorial: Engine and chassis number i audio a3 spb year 2020 model 2020

▶ Watch Audi A3 VIN Location Guide

• Workshop demo confirming the engine-bay chassis stamp location; also points out the engine number.

Common Problems & Troubleshooting

• “I can’t find the stamped VIN in the engine bay.” You usually won’t see it until you lift the rubber/plastic weatherstrip on the right-side fender apron/strut tower area—clean debris first.
• “The windshield VIN is unreadable.” Glare and reflections are common; wipe the glass and try scanning from an angle or in shade.
• Sticker warning: A door-jamb sticker can be missing, repainted over, or replaced—for buying/verification, cross-check the windshield VIN + stamped chassis VIN for consistency.

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This guide shows you where to find the VIN (Vehicle Identification Number) / chassis number on the Audi A3 8P, produced between 2004–2012—including the quickest scan points and the backup sticker locations.

Chassis Number Locations

1) Engine bay – stamped chassis number (primary)

• Where to look: Open the hood. On LHD cars, go to the right side of the engine bay and locate the coolant expansion tank (round/spherical tank with a blue cap). The VIN is stamped into the metal fender apron running alongside the coolant tank.
• Access: Usually visible, but expect shadows from hoses/tank and dirt/grease buildup on the painted metal—wipe it and angle a light across the stamping to make the characters pop.
• Note: The “right side” is the vehicle’s right side (direction of travel). Video shown is LHD.
• Tip: If the stamping is faint or grimy, use ScanVin’s high-contrast camera OCR to pull the characters cleanly—scan the stamped VIN directly instead of guessing at worn digits.

2) Engine bay – manufacturer label/sticker (near stamped VIN)

• Where to look: Still on the right-side strut tower/fender apron area, look for a black or silver manufacturer sticker near the stamped VIN, sometimes closer to the firewall or slightly lower on the tower.
• Access: Easy to reach, but stickers can fade, peel, or go glossy from heat, making them hard to read at certain angles.
• Note: Use this as a supporting check, not the main legal identifier (the stamped VIN is the priority).
• Tip: If the sticker print is washed out, capture it with your phone using the VIN scanner to reduce misreads (especially with worn fonts).

3) Windshield VIN tag (dashboard)

• Where to look: From outside the car, look through the glass at the bottom corner of the windshield on the driver’s side (LHD). The VIN sits on a small plate visible through the windshield.
• Access: Fastest to check, but you’ll fight glare/reflections, and the windshield’s dotted border can block the best viewing angle.
• Note: Some European-spec cars of this era may be missing the windshield VIN plate—if it’s not there, go straight to the engine-bay stamped VIN.
• Tip: If sun glare is washing out the plate, scan it instantly with your camera while shading the glass with your body to avoid transcription errors.

4) Trunk/boot floor – build sticker (service sticker)

• Where to look: Open the trunk and lift the carpet/spare wheel cover. In or near the spare wheel well, find the paper build sticker with the VIN and option codes.
• Access: Requires unloading the trunk and lifting the floor. The paper sticker is often damaged by moisture or cargo abrasion.
• Note: This is a backup VIN source for verification (great when windshield/engine bay is missing or unreadable).
• Tip: If the sticker is scratched or partially torn, use the VIN reader to scan what’s left and confirm the missing characters from the OCR result.

5) Service book/documents – build sticker

• Where to look: Check the original maintenance/service booklet. The build sticker (same style as the trunk sticker) is commonly pasted on an early page.
• Access: Only works if the car still has its original documents, but it’s usually the cleanest and easiest VIN to read.
• Note: Documents can be lost or swapped—always verify against the stamped chassis VIN when buying.
• Tip: If you have the booklet in hand, scan the VIN from the sticker to avoid typing mistakes and to speed up decoding.

Video Guide

Video Tutorial: Where is the VIN number of my Audi A3 8P ( 2003 – 2013 ) | All Possible VIN Number Locations

▶ Watch Audi A3 VIN Location Guide

• Walkaround on an Audi A3 (8P) showing the stamped engine-bay VIN, the nearby sticker, and the windshield VIN plate.

Common Problems & Troubleshooting

• Stamped VIN hard to read in the engine bay: Dirt/grease and shadowing are common—scrub the area and shine a light across the stamp at a low angle.
• Windshield VIN glare: Reflections can hide characters—shade the glass and change your viewing angle (stand to the side, not straight-on).
• Sticker warning: Engine-bay/trunk/service-book stickers can fade or be replaced—when verifying identity, the stamped chassis VIN is the primary reference.

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This guide covers the VIN (chassis number) locations for the Audi A3 (8L) produced between 1998–2003. Use the quick checks first (door jamb and trunk sticker), then move to the engine bay stamping if you need a “hard” chassis match.

Chassis Number Locations

1) B-Pillar / Door Jamb (Type Label)

• Where to look: Open the front door and inspect the B-pillar door shut (the vertical pillar between the front and rear side windows). Look for a black or silver manufacturer label that lists the VIN plus weight ratings.
• Access: Low difficulty. No tools—just open the door and wipe dust off the sticker if needed.
• Note: Written for LHD vehicles; the label is commonly on a door jamb/B-pillar area—check both sides if you don’t see it immediately.
• Tip: If the VIN is small or the print is faded, scan it directly with ScanVin.app so you don’t misread characters like S/5 or B/8.

2) Dashboard / Windshield (Visible VIN)

• Where to look: From outside the car, check the lower corner of the windshield on the left side (LHD, driver side) where a VIN plate/window is commonly placed.
• Access: Moderate difficulty. The VIN may be hard to see due to reflections—and on some older European-market A3 8L cars it may be missing/blank.
• Note: If your windshield corner area looks “empty,” move to the B-pillar label and trunk build sticker.
• Tip: To beat glare and reflections on glass, capture it with your phone using ScanVin.app and let OCR do the reading instead of squinting through the windshield.

3) Trunk / Spare Wheel Well (Build Sticker)

• Where to look: Open the trunk, lift the carpet, and inspect the spare wheel well floor or side wall for a white paper data sticker. It usually includes the VIN plus paint/option codes.
• Access: Moderate/High difficulty. You may need to empty the trunk and lift trim; the sticker can be torn, faded, or water-damaged on a 20+ year old car.
• Note: This sticker is extremely useful for checking option codes, but it’s not as “tamper-resistant” as a metal stamping.
• Tip: If the sticker is aged or blotchy, use ScanVin.app’s VIN scanner to pick out the characters without manually transcribing a half-faded print.

4) Engine Bay (Firewall / Plenum Chamber)

• Where to look: In the engine bay, check the center rear area near the firewall, around the plenum chamber/rain tray below the windshield. The VIN may be stamped into metal or shown on a tag—sometimes you’ll need to lift a rubber seal or remove a small plastic cover to see it.
• Access: High difficulty. This area traps leaves, dirt, and grime, and it’s usually in deep shadow under the hood line.
• Note: If you’re confirming identity, this is one of the most important checks because it ties back to the body structure.
• Tip: Clean the surface first, then use ScanVin.app in high-contrast scanning mode to decipher weak stamping and dirty characters without guessing.

Video Guide

No video sources were approved for publication for this exact Audi A3 (8L) 1998–2003 VIN-location guide.

Common Problems & Troubleshooting

• Windshield VIN hard to read (or missing): reflections, tint, and older EU-spec fitments can make the dash VIN area unreadable or blank—use the door jamb label and trunk sticker as primary alternatives.
• Engine bay stamping buried in grime: the plenum/firewall area often packs with dirt and leaves; scrub and wipe before attempting to read or scan.
• Sticker validity warning: the trunk build sticker and B-pillar label can be damaged or replaced—when buying a car, always cross-check with a metal-stamped VIN location where possible.

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