roarhag

Thanks for all the replies to you all! Just for information I have recently moved back to the west coast, hence it should not ve environment causing this issue. I will post pictures of the rear discs when I'm changing back to winter tires in October. Will be interesting to see how coated discs looks after 6 months in this environment.

I assumed the ACC was working like this, this explains the excessive wear as I mostly drive long distance using ACC. I believe corrosion on the shields are due to the crappy disks creating some sort of electric bridging and causing rust to develop. The rest of the car is totally without any signs of rust underneath. Guess I have to add some "corrosion eating" paint on the shields to avoid further agressive rust. The bad thing is you need to remove the wheel bearings to change the shields unless you cut them open i one end....

The conclusion is the OEM rear disc from 2016 models are crap quality. I also had to have the turbo replaced after only 30K km, due to manufacture failure. You should have your turbo checked if you feel the car is getting rough changing especially from 1. to 2. gear. My turbo could be moved 3-4mm off senter while seated. No issues after replacing it.

New rear

I have changed discs to coated discs to avoid some of the horrible looking rust. I'll post a picture of the front discs and pads so you can see the difference. Front discs and pads are good for another 10.000km, where as rear was totally gone.

Anyone knows why this is the case with this model. I have a theory that ACC is using same circuit as the handbrake to control speed. Its a bad design since there are no warnings rear. On any other brand I've had I have used the front warning as an indicator to change brakes all around. However this is no longer the case. I mostly drive long-distance hence the ACC is actively in use.

Hi. I have exactly same issue with my 2016 1.8 TSI. Rear boot open; four times in 1 month. Have found car unlocked many times even when distance to transmitter is way beyond reach. I do not keep my key in the pocket; but even if I did the doors should auto-lock within 1 minute if no door is operated; except boot... I just left my car at the garage today to have this issue solved. My gut feeling is this is a combination of temperature and humidity changes. Hopefully its just the key... I will keep you posted when I have the final answer. Regards frustrated owner in Norway.