So I've got a 2017 Audi A4 with the light grey cloth seats, which looked great when I bought the car but have turned into an absolute disaster zone over the past few years. I've got coffee stains, some kind of greasy mark that I think came from a takeaway bag, and just general ground-in dirt that makes the seats look permanently grimy no matter how much I scrub at them with the upholstery cleaner from the supermarket. I've tried all the usual DIY tricks – baking soda, vinegar solutions, those foaming aerosol cleaners and while they make the surface look okay for a day or two, the stains seem to come right back or just reappear as soon as the fabric dries out. I'm starting to think I need professional equipment like a hot water extraction machine or steam cleaner to actually lift the dirt out from deep within the fabric fibres, because surface cleaning just isn't cutting it anymore. I've been researching options online and came across exoticcarcare.ae/audi-detailing-abu-dhabi which seems to offer interior detailing as part of their packages, but I'm not sure if they use steam cleaning or something else for fabric seats. Has anyone had their cloth seats professionally deep-cleaned and actually seen the stains disappear completely, or is it one of those things where you just have to accept that light-coloured fabric is always going to look a bit dirty? Also, how long does a professional interior clean usually last before it starts looking grubby again, and is there any kind of fabric protection they can apply afterwards to make it easier to maintain? Really curious to hear from people who've had this done because I'm getting seriously fed up with the state of my interior.