Audi Q3 Cabin Air Filter: Intervals, Fitment & Warning Signs

On the Q3, most Audis genuinely have the filter behind the glovebox, but a few models place it under the windscreen cowl instead.

Generation covered: this guide is for the third-generation Q3 (F3, 2018–present), with particular focus on 2018–2023 registered examples now old enough for parts to be a common search. Check your logbook or VIN if you're unsure which generation you have.

Illustration for editorial purposes

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OEM Part Number: 5Q0819669

Accuracy note: this part is genuinely consistent across engine and trim variants, since it's part of the HVAC system rather than the drivetrain.

Cabin air filter, current generation, standard particulate filter	Audi OEM: 5Q0819644A — shared with Q3, TT, TTS, RS3, S3, and same-era VW/Skoda/Seat MQB models
Cabin air filter, current generation, activated carbon/charcoal filter	Audi OEM: 5Q0819653 — a genuinely different filter media from the standard version, confirmed fitted across the same range depending on original spec
Current combined reference	Audi OEM: 5Q0819669 is commonly listed as a combined/superseding reference for either type — check which specific filter your car has fitted rather than assuming from the number alone

Audi Q3 Cabin Air Filter: Easy to Forget, Easy to Fix

Skipping this one on a Audi Q3 won't cost you performance or reliability, only air quality inside the cabin — which is why it's routinely the most overdue item on any used car's maintenance history.

Before you buy: filter size and whether your car uses a standard or activated-carbon filter varies by trim. Always confirm against your VIN before ordering.

Audi Q3 Cabin Air Filter: What It Does

Two filters get mixed up constantly on the Audi Q3: this one cleans air for the cabin ventilation system, catching dust, pollen and (on activated-carbon versions) some airborne pollutants, while the separate engine air filter deals purely with combustion air. They don't share a part number or a purpose.

Audi Q3 Cabin Air Filter reference plate

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A Genuinely Important Clarification Worth Confirming Before Buying a Filter — Audi Q3 Cabin Air Filter

This is genuinely worth confirming before ordering a replacement: most Audis use a front-access method with the filter positioned behind the glovebox, but a small number of models instead place the filter under the cowl at the base of the windscreen — worth confirming which specific location applies to your car before buying, since the part and fitting procedure are completely different between the two.

A genuinely useful, preventative finding worth knowing: consistently using the recirculation setting rather than fresh air mode helps keep the evaporator dry, which can prevent musty smells and mould developing in the first place. It's also genuinely worth knowing a useful technique for an existing smell: setting the heater to high with recirculation on and letting the car idle for around fifteen minutes can help bake an existing smell out of the evaporator.

It's also genuinely worth knowing to check the plenum area below the windscreen for a build-up of leaves and debris, since this is a regularly documented source of water finding its way into the cabin.

Audi Q3 Cabin Air Filter: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Cabin Air Filter Guide for signs it needs changing, confirming fitment against your VIN, and choosing standard, carbon, or HEPA media.

More Audi Cabin Air Filter

The same part, covered across other Audi models.