After getting burned twice by cheap transmission flushes that made my 2015 A4's shifting even worse, I decided to stop messing around and look for a place with actual credentials. I found a shop that advertises a Certified Audi Transmission Service Sharjah and decided to pay a bit more for the peace of mind, and honestly it was a completely different experience from the random garages I tried before. They didn't just drain and fill, they actually dropped the pan, changed the filter, ran adaptations, and showed me the old fluid which was dark and burnt. The car shifts like butter now and I haven't seen the gearbox warning light since. If you're on the fence about spending extra for a certified specialist versus a general workshop, just do it right the first time because my cheap experiments ended up costing me more in the long run.