Hey mate The wife had the same issue on her MK7. The water is probably coming in through the bulkhead behind the pedals. It's a known build fault on MK7s. Our main Ford dealer had the car for 2 days, seats removed, carpet removed and dried. Bulkhead reseated, good as new. The repair bill came to £220.00, which she paid but the guy we dealt with said that in his opinion, the wife should'nt have to pay. He emailed Ford Customer Services about the issue and 3 days later the wife received a full refund. Pressure your Ford dealer or follow it up yourself. Good luck