Yesterday I took the suicidal trip to Heathrow airport, at 17:00, on the M25. It took me 2 hours to get there from East London - something left for a different conversation. While sitting in traffic, it felt like I was never in the correct gear. The car would feel like it’s about to stall, being in too high of a gear, as I came to a stop. Is this something normal, or does it just need to be broken in? Has anyone else experienced this on the Xf gearbox? My S4 (2018) has only just clocked 200 mls. Also, with all the shuddering, I could hear some vibration in my passenger seat, which also made me a little upset. But that I need to discuss with Audi anyway.