Yesterday, when I arrived from a drive I saw some drops on the floor, but I think it was condensation water from the air conditioning, as we are over 30s C now in Madrid. It also smell like water, but not sure. I will check the level anyway. The heating problem I think is going to be the thermostat, I changed it last summer and this was fixed, but for any reason is overheating again when pushing hard. What I have no clue is the performance issue, so maybe this MAF could be something to be checked. I have localized what it is in the US forum, so lets see if I can disconnect it and go for a drive with it unplugged.