I've recently bought a lupo gti with a 6 speed gearbox! A few days ago my clutch pedal got stuck to the floor and wouldn't let me change gear, it popped back up again but still wouldn't let me select a gear! I had to get towed home and the guy who towed me asked what happened so I told him and he told me to replace the slave cylinder, I've done this and bled the system but I still can't select any gears while the engine is running and while the engine is running the clutch pedal has a slight engine vibration half way down when pushing it! Does anyone know if it could be the clutch master cylinder or the clutch itself? Or maybe even something else?