The current A3 (8Y, 2020-onwards) uses front seats with side-impact airbags in the outer bolsters across every trim. That is the single most important fit factor for a seat cover: it must be explicitly labelled airbag-compatible with a seam engineered to release under deployment force.
Read the full Audi A3 seat covers guide →The Audi Q3's rear bench slides 150 mm fore and aft and reclines, so a rear cover has to cope with the seat moving. The RS Q3 has sports seats with integrated headrests and very deep bolsters, which universal covers cannot install on cleanly, so that version needs a specialist cover.
Read the full Audi Q3 seat covers guide →Three products we would look at first in this category. Fit for your Audi still comes first: check the compatibility list on the listing against your exact model and year, and read the model guide above.
Full set with headrest covers; listed as side-airbag compatible on the front covers only.
Sakura SS5370 Heavy-Duty Waterproof Seat Cover Set: see the price on Amazon →Universal fabric set with headrest covers; not waterproof, per the listing.
Xtremeauto Classic Front and Rear Seat Cover Set: see the price on Amazon →Single front cover for work clothes, dogs or muddy kit.
Xtremeauto Heavy-Duty Waterproof Front Seat Cover: see the price on Amazon →Affiliate links: as an Amazon Associate we earn from qualifying purchases. Prices are set by Amazon.
Each vehicle hub links to every accessory category for that model.
The generation, body style and boot figures above draw from these public references. See how we write these guides for the wider methodology.