u/Express-Response-591

I have a 2014 Audi A5 automatic with 109,000 miles on it. I just got it back from the shop a few days ago. It was running perfectly until last night when I heard a little rattle coming from the car. It sounds like it’s coming from the passenger side near the front, you can hear it more when the window is down. The car makes this noise anything below 2000 rpm. The check engine light is off so I’m hoping it’s not too major but I want the car to be perfect. The mechanic replaced the high pressure fuel pump, timing chain, an air intake leak, valve cover reseal, upper timing chain cover gasket, crankcase breather, new spark plugs and oil change. What could be the cause of this noise? I would appreciate any insight, thank you.