Per this post I recently replaced the old plasticky fuel hose between the tank and the hard pipe just behind the centre tunnel with brand new unleaded-friendly rubber hose in a single run. It was a bit fiddly to fit but I got there, but since then there is a very strong smell of petrol inside the car. There seems to be no smell in the front boot around the tank, nor in the engine bay, just inside. I've checked the obvious things like that the rubber hose is actually properly seated onto the hard pipes and that the clips are tight... any other ideas before I take the seats and carpets out again to check that there are no splits in the new hose in the tunnel... though I can;t see where else the problem could realistically lie since that's the only part I replaced? Difficult to imagine that even some fairly robust pushing and pulling of the hose would have cut it through...