BMW 2 Series Knock Sensor Issues & Performance Drop

Thanks for sharing your experience! That's really helpful to know about the coil pack and spark plug connection. Sorry to hear you had to deal with that hassle too. My symptoms do sound pretty similar to what you described. Do you remember roughly how much you ended up paying for the repairs? Also, just curious, have you had any other related issues pop up since getting it fixed?

Thanks for the update! I actually just got back from the mechanic yesterday and wanted to share what happened. It was quite an experience! The problem turned out to be more complex than expected, had multiple issues with the fuel injection system and a worn-out oxygen sensor. The mechanic walked me through everything and showed me the damaged parts. The repair took longer than anticipated, but I'm glad I got it sorted. The car's running much better now, no more sluggish acceleration or rough idling. Fuel consumption has improved significantly too. Had to pay more than I initially hoped, but at least the problem's fixed properly this time. Really appreciate your help and input earlier. It gave me a better idea of what to expect and helped me ask the right questions at the shop. Fingers crossed it stays running smoothly now!