Most manufacturers, as well as PUG, state that the automatic transmissions are maintenance-free. I am dealing with the 6-speed automatic transmission, which should also be available in other models such as 407. Last November when I had a winter check made by PUG and also had the cooling fluid exchanged with me, I asked the workshop master whether they could control or replace my transmission oil, since the car has already reached its 100,000km ( EZ.2007). Then he said that it is not so easy and it would be very expensive and you have to open the gearbox for this. In the meantime I know that you only get to the filter / sieve when the transmission tray is removed. I have already seen how to change the transmission oil at Youtoube and that it is a bit expensive. In my maintenance booklet, however, there is nothing in it that the transmission oil should be changed at all. In other contributions from d I have read the net that PUG should not even have the necessary oil and tool for this and you should rather go to a gear specialist and they can not determine the effort before and therefore no account estimate can be made. I would be interested here, however, who already had his gear oil replaced and what the whole fun cost. Wouldn’t be bad to mention where to exchange it, especially the Cologne room, since i My automatic circuit works very clean and reliable, but within a year since I had the car 3-4 switching errors where the next gear didn’t go in and I had to go off the gas in order not to stretch the speed up, as the speed was then lower there was a blow and it gear was back in. Then everything went well again and since the last error now again 5 months around. Wintercheck(November) was, however, PUG made a look at the gearbox and said that they could not find a fault and everything was so close. Greetings cpedv