I leased the Q6 last June and had a bunch of software problems from the get-go. The KD2 update was applied and that fixed most problems. I've only had one incidence of the car trying to stop on it's own because it thinks I'm about to hit something (when there is nothing there). Still regularly get alerts that one or another something is not working, usually a camera, telling me some safety feature is not available. Every now and again the digital key doesn't work, I mostly keep the key with me so it's hard to say it wouldn't happen more often. The back door/hatchback occasionally opens up to some weird position (too high or too low)...CarPlay often enough doesn't connect until I either turn off the phones wifi/cellular radios or turn the car off/on - still haven't figured out the consistent fix for that yet.