Audi A3 Catalytic Converter
Replacement catalytic converter — fitment, symptoms & live UK prices.
Fits Audi A3 — check your reg/VIN to confirm
Catalytic Converter
Aftermarket £80–£250; OEM much more.
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Will it fit my Audi A3?
Must be the correct emissions-spec cat for your engine and year, or it'll fail MOT. Type-approved units only.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Audi A3 catalytic converter needs replacing
- P0420 / catalyst efficiency code
- Rattling inside (broken substrate)
- Failed emissions/MOT
- Sluggish, rotten-egg smell
Fitting it yourself
Bolt-on or welded depending on setup. Lambda sensors often transfer over.
See Catalytic Converter prices on eBayMore Audi A3 parts
HeadlightAudi A3Brake PadsAudi A3Timing BeltAudi A3Glow PlugsAudi A3TurboAudi A3Wheel BearingAudi A3
Live pricesAftermarket £80–£250; OEM much more.
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