Where is the VIN in the Audi A6?

This guide covers where to find the VIN (vehicle identification number) on the Audi A6 (C9 (C9) [2021-2021]), including the fastest physical locations and the built-in digital VIN display.

Chassis Number Locations

Passenger door jamb (B-pillar data label)

• Where to look: Open the front passenger door and look at the B-pillar door jamb. You’re looking for a black manufacturer sticker/data label with white/silver text; the VIN is printed on it (often vertically).
• Access: Low difficulty. No tools needed, but you may need to reposition for better light in the door shut area.
• Note: Works the same for LHD and RHD cars—this label is on the passenger-side jamb (relative to the vehicle’s left/right).
• Tip: If it’s dim in the jamb, use your phone light and scan it directly with the ScanVin VIN reader to avoid swapping letters like B/8 or S/5.

Windshield VIN plate (lower dashboard corner)

• Where to look: From outside the car, look through the windshield at the lower corner of the dashboard where the VIN plate sits under the glass.
• Access: Medium difficulty. The VIN is easy to find, but glare/reflections can make it hard to read or photograph clearly.
• Note: On LHD cars it’s typically on the left side of the windshield (as viewed from the rear/direction of travel). On RHD it’s commonly on the opposite side.
• Tip: If reflections are fighting you, capture it with your phone using ScanVin—it’s quicker than squinting and manually typing a 17-character VIN.

Engine bay VIN stamp (strut tower / inner wing)

• Where to look: Open the hood and go to the passenger-side strut tower (suspension turret) / inner wing area. The VIN is stamped into the metal on top of/near the turret. On some cars you may need to lift a plastic trim/weather strip to reveal the stamp.
• Access: Medium to high difficulty. The area can be dusty/greasy, and the stamped characters may be filled with dirt—wipe/scrub first.
• Note: The stamp stays on the same physical area of the chassis; what changes between LHD/RHD is which side feels like “your side” when you’re standing at the car.
• Tip: After wiping the stamp clean, use High Contrast scanning in ScanVin to pull the stamped characters even if they’re faint or shadowed.

Digital VIN in the infotainment (MMI)

• Where to look: On the center screen, open Settings & Service → Car Information. The VIN is shown as the “Chassis number” (often alongside key information).
• Access: Zero difficulty. No tools, no crawling, no dirty metal.
• Note: This is ideal if the car is locked behind glass, the sticker is damaged, or the engine bay stamp is too dirty to read.
• Tip: If you don’t want to risk transcription errors from a long VIN, scan the screen with ScanVin and let OCR grab it instantly.

Video Guide

Video Tutorial: Where is the VIN number of my Audi A6 C8 ( 2018 - now ) - YouTube

▶ Watch Audi A6 VIN Location Guide

• A clear walkthrough showing the VIN on the passenger door jamb label, the windshield plate, and the engine bay stamp.

Video Tutorial: How to Check VIN Number Via Car's System in Audi A6 C8 ( 2018

▶ Watch Audi A6 VIN Location Guide

• POV tutorial showing how to find the VIN digitally in the Audi MMI under Settings & Service → Car Information.

Common Problems & Troubleshooting

• Windshield glare makes the VIN unreadable: Change your viewing angle, shade the plate with your hand, or shoot from outside at a slight diagonal to reduce reflections.
• Engine bay stamp is packed with dirt/grease: Scrub the stamped area with a rag (and mild cleaner if needed) so the characters aren’t “filled in.”
• Sticker vs. stamped VIN mismatch: A door-jamb label can be replaced—if you’re verifying identity, compare the label VIN with the windshield plate and the engine bay stamp, and check documents/history.

This guide shows you where to find the VIN (vehicle identification number / chassis number) on the Audi A6 C8 produced between 2019–2021, using the quickest-to-check spots first.

Chassis Number Locations

1) Door Jamb (B-Pillar) Sticker

• Where to look: Open the front passenger door (for LHD cars) and look low on the B-pillar for a black manufacturer sticker with white text/silver border.
• Access: Easy access, but it’s low to the ground and can be scuffed from shoes or dirt—wipe it before you try to read it.
• Note: The sticker is on the passenger side for LHD; for RHD cars it flips to the near-side B-pillar (passenger side relative to the driver).
• Tip: Because the label is high-contrast and packed with small text, you’ll get the cleanest result if you scan it directly with ScanVin.app instead of typing characters one-by-one.

2) Windshield (Dashboard) VIN Plate

• Where to look: From outside the car, look through the lower corner of the windshield (near the wiper rest area) for the VIN plate—passenger side for LHD.
• Access: No tools needed, but glare/reflections can hide the characters; in wet conditions the wiper blade and water droplets can block the view.
• Note: For RHD cars, it’s still at the near-side lower corner of the windshield.
• Tip: If reflections are washing out the numbers, capture it fast with the ScanVin.app VIN scanner so the app can grab the string without you misreading a character.

3) Engine Bay (Right Strut Tower) Stamped VIN

• Where to look: Pop the hood and go to the right-side strut tower (vehicle’s right side when viewed from the rear). The VIN is stamped into the metal near a red positive terminal cable.
• Access: Requires opening the hood. The stamping can be dusty/dirty and it’s dark metal on dark paint, so it’s easy to miss without good light.
• Note: This stamping is on the same physical side (right side of the vehicle) for both LHD and RHD cars.
• Tip: If the stamping is faint or low-contrast, clean it lightly and use ScanVin.app in High Contrast AI Mode to decipher the characters without guessing.

4) Digital VIN (MMI/Infotainment) – Mentioned

• Where to look: In the vehicle’s infotainment (MMI) system, the VIN can be displayed in the car’s information menus (varies by region/software).
• Access: No tools needed, but it’s not a physical identifier on the body—use it as a backup for cross-checking.
• Note: Menu paths vary by model year and MMI version.
• Tip: If you’re comparing VINs during a purchase, scan the physical VIN with ScanVin.app to confirm it matches what the screen shows.

Video Guide

Video Tutorial: Where is the VIN number of my Audi A6 C8 ( 2018 - now ) - YouTube

▶ Watch Audi A6 VIN Location Guide

• A quick walkaround on an LHD Audi A6 Avant showing the door jamb sticker, windshield VIN, and the engine bay stamped VIN.

Video Tutorial: AUDI A6 2019 VIN LOCATION - YouTube

▶ Watch Audi A6 VIN Location Guide

• Mechanic-led RHD demo confirming the same key locations, including the stamped VIN on the strut tower.

Common Problems & Troubleshooting

• Windshield glare or rain: Reflections, water droplets, and even the wiper blade can block the plate—change your viewing angle and use your phone camera to zoom/lock focus.
• Engine bay stamping hard to read: Dust + black paint makes the stamped VIN low-contrast—wipe the area and add light (flashlight) before scanning.
• Sticker validity warning: Door jamb stickers can be replaced; for buying/verification, always cross-check the windshield VIN + stamped VIN match the sticker and paperwork.

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This guide shows where to find the VIN (chassis number) on the Audi A6 C7 (Typ 4G) produced between 2011–2018, including the easiest sticker location and the more “hidden” stamped chassis spot under the hood.

Chassis Number Locations

1) B-Pillar / Door Jamb Production Label (Sticker)

• Where to look: A black sticker with white text (VIN + weight ratings) on the B-pillar (the post between the front and rear doors), usually on the lower section.
• Access: Easy—open the front door and read/scan the sticker. Minimal glare and great contrast.
• Note: On most LHD A6 C7s it’s commonly on the driver-side B-pillar; the video example is RHD, so it appears on the opposite side.
• Tip: For the fastest, error-free capture, scan the sticker directly with your phone—the clean contrast makes OCR lock on instantly.

2) Engine Bay VIN Stamp (Under Cowl/Seal near Strut Tower/Firewall)

• Where to look: The VIN is stamped into the chassis metal in the engine bay near the strut tower/firewall area (on LHD cars: typically the passenger side).
• Access: Moderate—open the hood, then lift the rubber weather seal and pry up the plastic cowl/cover at the base of the windshield to reveal the stamping underneath. Expect shadows and trapped dirt/leaves.
• Note: The video car is RHD, so the stamping is shown on the vehicle’s left side (passenger side on RHD). Use the same “base-of-windshield cowl” reference point on LHD.
• Tip: Because it’s dark and often grimy under the trim, use ScanVin’s flashlight + high-contrast scan to pull the characters out without guessing.

3) Lower Windshield VIN Plate (Dashboard Corner)

• Where to look: At the bottom corner of the windshield, on top of the dashboard—VIN visible through the glass (market-dependent).
• Access: Easy to reach, but reflections/glare can make it hard to read, and wiper position/dust can block it.
• Note: Availability varies by region; if you don’t see it, use the B-pillar label or the engine-bay stamping.
• Tip: To beat windshield glare and avoid mistyping, capture the VIN instantly with the VIN scanner instead of transcribing it by hand.

4) Trunk / Boot Floor Build Data Sticker (Spare Wheel Well Area)

• Where to look: Under the trunk floor mat, typically near the spare tire well (build data sticker format used across VAG).
• Access: Harder—may require clearing luggage, lifting the floor, and the sticker may be torn/faded/dirty.
• Note: Best used as a backup if the door sticker is missing or if you’re cross-checking details.
• Tip: If the sticker is worn or partially unreadable, use the phone scanner to grab what’s still visible so you don’t misread similar characters (B/8, O/0, S/5).

5) MMI / Infotainment VIN Display (Software Menu)

• Where to look: In the MMI menus (commonly: Car Settings → Servicing & Checks → VIN).
• Access: Requires vehicle power/ignition on; not helpful if the battery is dead.
• Note: Useful for verification, but always match it to a physical VIN location for identity checks.
• Tip: If you’re comparing VINs from different sources, scan the physical label with ScanVin to avoid menu/typing mistakes.

Video Guide

Video Tutorial: AUDI A6 VIN/CHASSIS NUMBER LOCATION & ENGINE NUMBER LOCATION (DIESEL)

▶ Watch Audi A6 VIN Location Guide

• Shows the hidden stamped chassis VIN under the hood cowl/seal and the B-pillar sticker on an Audi A6 C7.

Common Problems & Troubleshooting

• Engine bay stamp is “invisible”: It’s often buried under the rubber seal and plastic cowl lip and can be covered with grime/leaves—wipe it and use a flashlight before you assume it’s missing.
• Windshield VIN glare: Sunlight reflections on glass can hide characters—change your viewing angle or shade the area with your body/hand.
• Sticker vs. stamped VIN: Door/boot stickers can be replaced—when buying, always cross-check the B-pillar label against the stamped chassis VIN.

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This guide shows where to find the VIN (chassis number) on the Audi A6 C6, produced between 2005–2010, using the most consistent factory locations you can physically verify on the car.

Chassis Number Locations

1) Stamped VIN on Firewall (Plenum Chamber)

• Where to look: In the engine bay at the center-rear, stamped into the metal firewall inside the plenum chamber (the recessed area between the engine and the windshield). On LHD cars it’s usually slightly toward the passenger side.
• Access: Open the hood → locate the plastic cowl near the wipers → pull up the rubber weather strip that runs horizontally across the back of the engine bay → lift the plastic plenum cover to expose the stamped VIN. This spot is commonly hidden by trim and sits deep under the windshield overhang.
• Note: This firewall/plenum stamping is generally in the same “rear of engine bay” area on LHD and RHD cars, even though “left/right” cabin references may differ by market.
• Tip: Because it’s recessed and shadowy, use a flashlight and let the camera do the reading—scan the stamped VIN directly with ScanVin.app instead of trying to squint and copy characters.

2) VIN Plate at Bottom of Windshield (Dashboard)

• Where to look: At the bottom corner of the windshield on the left side (LHD/driver side), viewed from outside through the glass.
• Access: Stand outside the car and look through the windshield at the dash corner—wipe the glass if there’s grime, condensation, or ice/snow buildup.
• Note: On RHD models, this windshield VIN plate is typically mirrored to the opposite side.
• Tip: Windshield VINs are notorious for glare and reflections—capture it cleanly with your phone using ScanVin.app so you don’t misread characters like B/8, S/5, or 0/O through glass.

3) B-Pillar / Driver Door Jamb VIN Sticker (If Present)

• Where to look: Open the driver’s door and inspect the B-pillar/door jamb for a black regulatory sticker that includes the VIN.
• Access: Just open the door and look straight at the pillar area; no tools needed. If it’s dirty, scrub lightly with a damp microfiber to reveal the print.
• Note: On older C6 cars this sticker may be missing (peeled off, replaced after bodywork, or removed). Don’t panic—use the firewall stamping as your primary verification.
• Tip: If the sticker is there, it’s high-contrast and scans easily—use the free VIN reader on ScanVin.app to avoid typing errors.

Video Guide

Video Tutorial: Where is VIN Number Location in AUDI A6 C6 ( 2004 - YouTube

▶ Watch Audi A6 VIN Location Guide

• Clear walkthrough on an Audi A6 C6 showing the firewall/plenum stamped VIN and the windshield VIN, with a note that the door sticker may be missing on some cars.

Common Problems & Troubleshooting

• You can’t see the stamped VIN in the engine bay: It’s often covered by the plastic cowl and rubber seal—lift the trim and aim a light into the recessed plenum area.
• Windshield VIN won’t read: Glare, reflections, or dirt/ice can hide characters—clean the glass and change viewing angle (stand slightly to one side).
• Door jamb sticker is missing: Stickers can be removed or lost with age/bodywork; always cross-check against the stamped firewall VIN, which is the most authoritative physical marking.

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This guide shows where to find the VIN (chassis number) on the Audi A6 C5 produced between 1998–2004, including the stamped body VIN and the factory VIN sticker locations.

Chassis Number Locations

Engine Bay (Bulkhead / Plenum Chamber)

• Where to look: Open the hood and look at the firewall/bulkhead area directly below the windshield cowl (plenum chamber). The VIN is stamped into the metal, roughly centered, often near the battery / heater box area. You may need to lift the rubber weather strip or remove/loosen the plastic plenum cover to see the stamping.
• Access: Moderate. Expect leaves/grime buildup in the plenum—scrub/wipe the metal stamp area to read it. A trim tool or flat screwdriver can help you pry up clips carefully, and a flashlight helps with shadows.
• Note: This location is consistent across Sedan (Saloon) and Avant (Wagon), and applies to both LHD and RHD—only your working position changes.
• Tip: If the stamping is grimy or faint, use ScanVin.app’s high-contrast camera + OCR to scan it directly instead of guessing worn characters.

Dashboard (Windshield Corner)

• Where to look: From outside the car, check the lower driver-side corner of the windshield for a small VIN plate/tag visible through the glass (near the dash top).
• Access: Low to Moderate. The VIN can be hard to read due to glare/reflections and the angle through the glass.
• Note: Many US-spec cars have this visible plate; some European-market cars of this era may not show a readable VIN through the windshield or it may be obscured.
• Tip: To beat reflections and transcription errors, capture it with your phone at an angle and let OCR read the string for you.

Production / Option Sticker (Spare Wheel Well)

• Where to look: Open the trunk and lift the floor carpet/mat. Look for a white paper production/option sticker in or near the spare wheel well (commonly on the left side of the well or on the trunk floor under the carpet). This sticker usually lists the VIN, plus paint code and PR option codes.
• Access: Moderate. You’ll likely need to empty the trunk, lift the heavy floor panel, and peel back trim. Stickers may be torn, water-damaged, faded, or peeling with age.
• Note: Sedan vs Avant access differs slightly (cargo floor design), but the sticker concept and area are the same.
• Tip: Because the sticker is high-contrast when intact, use the free VIN reader to scan it quickly without misreading similar characters (8/B, 0/O, 1/I).

Video Guide

(No video published for this model in the provided sources — the supplied videos were rejected as they do not show an Audi A6 C5.)

Common Problems & Troubleshooting

• Plenum chamber dirt hides the stamp: Leaves and grime build up under the windshield cowl—wipe and scrub the stamped metal before trying to read it.
• Windshield glare makes digits look wrong: Move your body/camera angle, shade the VIN area with your hand, and avoid direct sun reflections.
• Sticker VIN isn’t a legal VIN stamp: The trunk sticker is useful, but always match it to the stamped body VIN (engine bay) to confirm the car hasn’t been re-tagged.

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This guide covers the practical VIN (chassis number) locations you can check on the Audi A6 C4, produced between 1997–1997, so you can verify the car quickly and accurately.

Chassis Number Locations

1) Engine Bay – Bulkhead/Firewall (Stamped into metal)

• Where to look: Open the hood. Go to the center of the bulkhead/firewall (the metal wall between engine and cabin), directly below the windshield cowl/rain tray area. Look for the VIN stamped into the chassis metal (sometimes on a slightly raised section).
• Access: This spot often collects dust, grime, leaves, and it’s usually shadowed by the hood/cowl. You’ll likely need to wipe/scrub the metal to make the characters readable.
• Note: Left/right references are the vehicle’s left/right in the direction of travel; this location is central, so LHD/RHD doesn’t change where you look.
• Tip: If the stamping is dirty or low-contrast, use ScanVin’s High Contrast AI Mode to pull the characters out—scan the VIN directly with your phone instead of guessing worn digits.

2) Trunk – Spare Wheel Well “Vehicle Data” Sticker

• Where to look: Open the trunk. Lift the floor carpet/cover to access the spare wheel well and surrounding panels. Find the white paper Vehicle Data Label (often near the spare wheel well or on a side panel). It lists the VIN plus paint/engine/option codes.
• Access: Trunk lighting is usually weak, and the sticker can be torn, faded, or water-damaged. Dot-matrix style printing can be harder to read.
• Note: This is a sticker/label, not a stamped chassis VIN—use it as a quick reference and cross-check with the stamped number when possible.
• Tip: In a dark trunk, turn on your phone light and use the VIN scanner OCR to avoid misreading dot-matrix characters.

3) Dashboard / Windshield Lower Corner (If equipped)

• Where to look: From outside the car, look through the lower corner of the windshield on the left side (in the direction of travel). Some vehicles have a VIN plate visible through the glass.
• Access: Main issues are windshield glare/reflections, plus dirt on the glass or obstruction from wipers.
• Note: Not every A6 C4 has a visible windshield VIN plate depending on market/spec—if you don’t see it, confirms nothing by itself; move to the firewall stamp and trunk label.
• Tip: To beat glare and avoid transcription mistakes, capture the VIN instantly with ScanVin at an angle rather than trying to read it through reflections.

4) Service Book / Vehicle Documents (Duplicate data sticker)

• Where to look: Check the service schedule / maintenance booklet (often stored with the owner’s manual). A duplicate vehicle data sticker is commonly placed on an early page.
• Access: Only works if the documents are still with the car; older cars often have missing books.
• Note: Treat this as a convenience copy—verify against the stamped chassis VIN for purchase/identity checks.
• Tip: If lighting is poor indoors or the print is faint, scan it with your phone camera instead of typing the VIN by hand.

Video Guide

No videos from the provided list met the “publish” criteria for this specific Audi A6 C4 guide.

Common Problems & Troubleshooting

• Dirty/greasy stamping in the engine bay: Scrub with a rag and mild degreaser, then re-check from different angles—shallow stampings can “disappear” under shadows.
• Trunk sticker hard to read: Use stronger lighting and flatten the carpet fully; dot-matrix print can look like missing characters when the label is wrinkled or faded.
• Important: A paper sticker (trunk/service book) can be replaced—when verifying a vehicle, prioritize the stamped chassis VIN and ensure all VINs match.

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