1. Worn clutch disc: The clutch disc is a wearing component that eventually wears out and causes judder when it slips against the flywheel.
2. Contaminated clutch disc: Oil or grease on the clutch disc can contaminate the friction material and cause judder.
3. Warped flywheel: The flywheel can become warped due to heat or mechanical stress, causing the clutch disc to slip and judder.
4. Weak or damaged clutch springs: Worn-out clutch springs can cause the clutch to engage or disengage incompletely, leading to juddering.
5. Faulty release bearing: A worn or damaged clutch release bearing can cause judder by preventing the clutch from disengaging smoothly.
6. Hydraulic system issues: Air in the hydraulic lines or a faulty master or slave cylinder can lead to inconsistent pressure on the clutch, causing judder.