B8.5 S4 clunk noise

[ProudS4owner]

I bought a 2014 S4 and absolutely love it, but there is a strange clunk noise I keep hearing while driving occasionally. I'm guessing its the S-tronic dual clutch working myself as it seems more noticeable while in Dynamic mode. its not extremely loud, but enough that I and my passengers have heard it and wondered what is was. I DO NOT have the sports rear differential either. I bought it Certified used so its covered under warranty should I have the dealer take a look at it?
I'm new to the Audi world so any help is appreciated!

[jygesq]

if under warranty take it to the dealer.

[Tashfeen]

Does it happen at lower speeds and downshifting from, mainly 2-1 and, occasionally 3-2 as well as when engine is cold. If so, I believe it is normal. If not, like mentioned above I'll get it booked in.


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[B8F80]

This is going to sound really crazy, but it is normal. Mine did it too and it used to scare me and it was pretty embarrassing with passengers. It's like 99.9% fixable with the APR DSG tune (you don't need to do the power upgrades if you don't want to, they are separate). With the newer transmission maps the car is WAY smoother. It shifts better in sport, but actually smoother in comfort. It's honestly the way the car should have come. If you do a quick search you'll find more relevant info. Depending on your mileage you may be more for/against any tuning due to warranty concerns. My car was at 69k when I bought it so I was basically on the cusp of the warranty anyway and I went full stage 2.5 APR all around. . . If they sold the car like this from the factory it would be the segment leader by a mile.

[303 Spartan]

If you are under warranty, definitely take it into the dealer and let them take care of it, or diagnose what it is, at the minimum.

With that said, I think it's important to try and determine the general vicinity (sp?) of where the clunking is coming from and the specific conditions. The reason for this is that I had a strange clunking noise start to show up a few weeks ago. It was really only noticeable over bumps. Over time it started getting louder and louder to the point where I knew something had to be wrong. Driving with the windows down, I was able to pinpoint it to my right rear suspension area. I parked the car, opened the trunk and started pushing down with my hands on the inside of the trunk to make the back of the car bounce. That really made the right rear clunking very noticeable.

I took it to a shop and they discovered that the bolt connecting my right rear strut to the control arm was rusted out and broken. It was at the verge of completely snapping in half. In fact, the mechanic managed to break the head of the bolt from the threads while removing it. He came and showed me the broken bolt and told me I was extremely lucky I made it to the shop before it broke completely. He noted that it was extremely rusty (despite my car only having 35k miles and always being parked in a garage each night). He checked the others and replaced them. Needless to say the clunk is gone after replacing that bolt (an the others, proactively).

[doughboy17]

if under warranty take it to the dealer.

this.

[colinmg]

Had the same clunk noise mostly when in manual mode also a 2014 CPO took it to the dealer got it back a month later with a new transmission in it . Had to have the new transmission shipped from Germany .