Seat Leon Hybrid Braking and Starting Problems

Start by checking if there are any warning lights on the dashboard, as these can indicate specific issues. For the shaking and hesitation, inspect the engine mounts for any signs of wear or damage. The pulsing sensation when braking could be related to the brake rotors or ABS system. Since these issues can affect safety, it's important to have a professional mechanic inspect your vehicle. Let me know if you have any further questions or if there's any progress.