The garage had the car back again for three days this week. They went over the same ground as before and this included removing the rear bumper again. This time they found that a grommet was not seated properly.
The work sheet/ charge sheet shows: 2 air ducts, 2 plates, 1 gasket,
1 screw, 1 stopper, 1 bolt, Sealant and paint.
This weekend we have had very heavy rain for 2 days and the car has been parked outside in this. Also, tonight I drove about 40 miles in heavy rain and had to drive through puddles that spanned the full width of some of the roads. The car has stayed dry inside. Whoopee!
What I do not understand is that if the rear bumper had to be removed to reach the air duct - then I assume the air duct is below the level of the chassis by the loading platform. Therefore how did the water get over the high bit of chassis under the rear seats and then to the floor pan where the rear passenger's feet rest.
When the car was leaking I could see water resting on a flat surface by the inner wheel arch. I could see this by removing the loading platform and removing storage pan which rests on the spare wheel and then with a torch and my head resting on the spare wheel I could see the water.