My Lupo 3 L is built in 2000 and has 185000 km I shut down the car 3 years ago because I needed something with trailer coupling and I didn’t want to continue with the knocking noises. I always wanted to tackle the problem, but I never had the time to do it. Now my daughter is at the forelight and it’s time that I started to do it. But I wanted to listen before if the problem is known. So it’s a quite loud, speed-dependent knocking in all gears and it suddenly occurred. The car got a new engine at 41000 km and according to the previous owner already 2 gears. At 51000 km the complete clutch unit including gears and control unit was replaced again. Since then I had no problems with the gearbox and clutch, except that it basically switches rough for my terms. Does someone have similar experiences with the knocking noises? Before I start screwing, I would like to resort to the experiences of others.