the_runner213

Whenever I'm backing up my car, I end up hearing a strange "clunking" sound. It appears to be stemming from underneath the car. I can actually feel the sound via vibration. It happens during motion and only once (I think). I don't think this is normal since I have not experienced it in any cars I've owned and/or driven. Is this normal for the S3? I plan on taking it to the dealer for inspection, but wanted to see if this is an isolated issue or not.

:/

Syrome

Clunking sounds and cars should be an atypical thing. I would certainly call the dealer and see what they have to say.

ahyeah

Mines made a clunk/'pang' a couple times reversing after sitting all night. I figured it was the ebrake or rust film on the brake system. I've been keeping an ear out for it but, so far, it doesn't seem like a big deal.

arU4ic

+1 on the brakes, it's the pads moving in the caliper.

OOOO S3

you might also get the sound reversing with your steering wheel turned fully in one direction.

the_runner213

So it's normal? I was thinking it was an all-wheel drive thing since I've never owned one before the S3, but then I thought about driving my friend's A7 several times and never had that issue. Hmm...

arU4ic

If you hear a low, barely audible sound with the wheel turned to lock in either direction, the quattro will make a slight noise and stutter a bit moving forward OR back. That is also normal AWD behavior.

Tsle

My S3 does this consistently, and I've always figured it was the pads, as arU4ic says.

the_runner213

Thank you! I will cancel my service appointment now.

arU4ic

There needs to be a technical term for the situation and sound when 4wd or AWD slightly binds in a tight turn on dry pavement.

How about, 'Differential Bind Shutter'

Meh. Someone else?