How can I stop my car from flooding
do you know where the leak is
Likely a gasket or rubber seal around your roof. As the previous person indicated, you need to find where the water is coming from.
Check & re-seal the rubber plugs under your carpet with silicon & or check all your window seals. Most likely it's the sunroof seal or windshield. A glass installer will have to pop it out & re-seal. They also can use dye to locate the leak.
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