I picked up my 2014 a6 avant 3 weeks ago, took it back 2 weeks ago as start stop, auto release handbrake and parking sensors were up the spout, on way home the adblue p20e8 fault popped up so I refilled it with just over 5L tried the reset which worked for about 30 seconds then got the same message pop up, but it also bought on the engine management light too. Apparently there's nothing wrong with it and I picked it up yesterday with them saying all the faults had been sorted to go back out an hour after getting home to have the 650m message pop up yet again.
Also on a side note I was going through the menu's to find out how to change the clock time and found the engine oil level menu with it saying please reduce the level.... now just before I picked it up it Apparently had a service, should I just hand the car back as a lemon or should I persevere?
I'm starting to get the feeling that I've been sold a dud car as it wasn't as described in the ad