I have for sale a genuine luggage/boot liner out of my 2017 X3 ( F25 ) I believe this will also fit a F26 X4, had it from new in 2017 and it’s in great condition, £95 , collection preferred due to size, NG19 area, that said I do travel north of Leicester up and down the M1/A1 as far as Durham so could meet up if needed, cheers
