HI, I bought a 2007 aygo last weekend then joined this forum and was very worried to see a lot of people having problems with water leakage, I contacted my dealer a day before I was due to pick up my new car and he had never heard of this problem in his dealership (Sunderland) and assured me my car was bone dry as he checked for me ( I suffer from severe asthma and damp brings it on).
I picked up my car yesterday and drove it home and loved the drive, on reaching home I checked everything out as you do and the carpet in the boot underneath was absolutely soaking wet I mean dripping, I was furious. I called the dealership immediately and told them I was rejecting the car and wanted my old yaris and my £3ooo back. They were stunned when I took it back and couldnt believe how much water was in the boot (he didnt look in the boot apparently) anyway the outcome was they took the car back and gave me an 57 reg yaris instead at no extra cost, saving me another £1000 and they couldnt apologize enough, from now on I'll stick with Yaris and wait a few years until the aygo situation is sorted.
By the way the law states that anybody can do what I did and refuse the car or a repair and demand any deposit or trade in back because toyota are aware of this problem and shouldnt be selling cars with faults I hope this helps anybody having problems at the moment, stop using the car immediately and quote the 1979 sale of goods act at them