Where is the VIN number in Audi Q3 III (FJ) [2021-2021]?

This guide shows where to find the VIN (chassis number) on the Audi Q3 III (FJ) [2021-2021], including the hidden stamped VIN and the easy-to-scan door jamb label.

Chassis Number Locations

Front Footwell Floor (Chassis Stamping under Carpet Flap)

• Where to look: On the interior floor cross-member (raised structural beam) directly in front of the front seat. The VIN is stamped into the metal and hidden under a rectangular plastic flap integrated into the carpet.
• Access: Medium. Open the front right door, slide the floor mat back, locate the rectangular cut-out, then lift/pry up the plastic flap to expose the stamped metal VIN (it’s low to the ground and often poorly lit).
• Note: The stamping is on the right side of the cabin in the source footage. On LHD cars this is commonly the passenger side, but if you don’t find it there, check the driver-side front footwell as well.
• Tip: Because it’s dark and the stamping is metal-on-metal, use the app’s flashlight and OCR to scan the VIN directly from the floor stamping instead of trying to read it at an awkward angle.

B-Pillar / Door Jamb VIN Label (Type Sticker)

• Where to look: On the lower B-pillar door jamb area on the front right side, near the latch area—look for a black/silver manufacturer label with the VIN plus weight ratings/paint codes.
• Access: Easy. Open the front right door and inspect the pillar at the base where the door closes; usually clean and clearly printed.
• Note: On some markets/trims the label placement can vary slightly, but it will still be in a door jamb/B-pillar area rather than hidden under trim.
• Tip: This label is high-contrast and easy for a camera—use the free VIN reader to capture it instantly without mistyping characters like 8/B or 0/O.

Engine Bay (Firewall / Rear of Engine Bay Stamping)

• Where to look: At the rear of the engine bay on the bulkhead/firewall area, sometimes near the strut tower or under weather stripping/plenum covers (depending on trim and underhood plastics).
• Access: Medium/Hard. Pop the hood, then inspect the rear metal paneling; you may need to wipe dirt/leaves away and work around plastic cowling.
• Note: Under-hood stampings can be harder to spot and may not match exactly visually across different Q3 builds, so treat this as a secondary confirmation point after the cabin floor stamping and door label.
• Tip: If the characters are dusty or faint, clean the area and then scan it with High Contrast AI Mode to help pull the stamped characters out of shadows and grime.

Video Guide

Video Tutorial: Audi Q3 (2021) Chassis Vin Number Location pr/ds-fl

▶ Watch Audi Q3 VIN Location Guide

• Shows the hidden front floor VIN under the carpet flap clearly, plus a look at the door-jamb sticker (most useful segment is the newer-model interior floor flap demo).

Common Problems & Troubleshooting

• Can’t find the floor VIN flap: The plastic cover blends into the carpet—move the mat fully out of the way and feel for the rectangular cut-out on the raised cross-member.
• VIN stamping is unreadable: The floor stamping is low-light and reflective; change the viewing angle, add light, and clean lightly—don’t grind it.
• Sticker VIN doesn’t “feel official”: Door-jamb labels can be replaced; for a proper identity check, confirm the sticker VIN matches the stamped chassis VIN before buying.

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