Audi Q7 3.6 2007 engine problems!!!! Help!!
 

Hi Guys!
I have an Audi Q7 3.6 from 2007 and this morning had a big issue with it. I start the car and let it worm up for 1 -2 min. Everything was normal but when i wanted to leave after 5 ft the car stop. No warning light on the dashboard no messages .... just stop. i restart the car and the engine it's lumpy. I open the hood and i saw stem going out from the back of the engine and smells like burn gas or something. Didn't do anything yet waiting after my mechanic tomorrow morning. Any ideas or thoughts what can be? Someone experience something similar? If i start the car it's dying....
Now i'm just wondering if i need to expect "a bill $$$$" or can be something easy to fix.
Thank you so much :confused::confused::confused::confused::confused: :confused: