How can you stop rainwater getting into your footwell on the c4 grand picasso?

To prevent rainwater from entering the footwell of a Citroën C4 Grand Picasso, first check and clear any clogged drainage channels or sunroof drains, as these can cause water to overflow into the cabin. Inspect the door seals for any wear or damage, and replace them if necessary to ensure a proper seal. Additionally, ensure that the windshield and window seals are intact and not allowing water to seep through. Regularly check for any rust or damage in the bodywork that could compromise waterproofing.