Wood interior trim is not loved here

- I am an exception - I LOVE WOOD TRIM
What year is your A4, 2009-2012 or 2013 - trim shapes may have changed with 2013 'facelift'
What is your interior color - beige, grey or black.
Trim between models (except perhaps A4/A5 - front only) AFAIK not interchangeable - each has different shapes.
A6/A7/A8 will of course have nicer wood trim and likely more options - and they cost more

Only B8 A4 wood options have been Almond Ash Beige (light, yellowish) and Walnut Burl (medium-dark brown, beautiful burl grain) - depending on interior color of your ride.
3 years ago I switched my Almond Ash out for Walnut Burl - searched and found on eBay.de (with help from Google Translate). $300 for complete set, however requires a buyer/shipper in UK to assist.
Check classifieds here - wood trim shows up regularly.
Good Luck
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