As the title says, I've just noticed that when I am sat in traffic in the S3 (in neutral with the handbrake on) I notice an intermittent little jerk in the car along with the rev needle jerking up a little. It's as though I was lightly touching the accelerator to move away with the handbrake on. Its not a massive sensation though, if that makes sense. Just wondering if this is normal for a car with a turbo as I've never had one before. Thanks.