i hate typing as u can see i suck at it

 

^ Not a bad thing to consider. It wouldn't be the first time I've seen something seemingly completely unrelated to the issue be the cause of the issue. I would say if they still haven't figured it out when you get it back, go to your nearest parts store (autozone, o'reilly etc) and borrow one of their OBDII scanners to see what DTCs pop up; that'll be your first clue to if its isolated to just one cylinder (which would be ignition related- coil, spark plug, wire) or if its spread across the whole bank. Sounds to me like you could have a carbon build up- notorious on FSI motors, or possibly sludge on the valvetrain from the previous owner being less than diligent on oil changes, or something as simple as spark plugs gapped to the wrong size.

I also would be curious to the possibility that your cam follower might have eaten $hit. That is a known, recalled, extended warranty item because of its failure. They claimed to have fixed it on the '07 and '08 model years, so since yours is an '06, I wouldn't be all that surprised. In fact, if the stealer does hand it back to you with persistent question marks over their heads, tell them to check the cam follower. Insist on it. Don't drive out of there to follow my first bit of advice to get the DTCs scanned; Make. Them. Check. That. First. Obviously something is wrong and since all of their other "checks" aren't yielding results, tell them the cam follower is a known failure point, factory warranted to 120K miles, and since nothing else has worked, to check that. Assuming they haven't already checked it of course.

If after all that the problem remains, start going down the checklist from cheapest to most expensive. Start with a $10 can of seafoam and do a full treatment (procedures on this can be readily found on here or google; its really easy). The seafoam will attack your carbon build up, sludge buildup, and injector grime. Plus its a lot of fun to watch a hellish, monster white cloud of smoke blow out your tailpipes for 15 minutes From there, move on to the more costly stuff; spark plugs (probably due for a change anyway; I always change those first when buying a new (used) car because they're cheap, easy, and there's no solid way to know for sure just when they were changed last) then fuel filter, then wires, then look into coil packs (the dealer SHOULD replace those free, as they were another recall item and if they haven't been replaced yet, that could- as much as they're wanting to deny it- be the source of your problem)

After all of that (assuming the cam follower has been checked, replaced if necessary) if the problem still persists, it could be the fuel pump, and if not that, well then you're getting into really pricy territory to look at possible valve damage, sticky lifters, bad injectors, and other motor internals that can't be fully assessed without pulling the motor and tearing it apart. Hopefully it works out that its something simple and cheap and easy, and if not that, covered by warranty Best of luck to ya mate!

Oh, and on a last note, what kind of gas do you put in it? Pleeeeease tell me premium 91 or 93 octane.....

 

I had a rough idle a couple years back on startup with check engine light. Was a bad coil pack fixed under new car warranty. After that Audi came out with a recall on coil packs. Audi replaced all mine with the updated version free. I also read that automatics can have a rough idle, not sure what yours is though.

Good luck

 

I have been dealing with the same issue for 3 years no idea what it is. Going to look into it again when timing belt is replaced in 7k miles.