You could spec the stitching on the seats, gear gaiter and steering wheel as either grey or red, no design pack involved there.
Design pack then adds:
seatbelts with red stitching
Red stitching on the doors
Knee pads in alcantara and red stitching
Red bits in the air vents
Black RS3 mats with red stitching
Taken from Audi approved used site description for this car:
https://usedcars.audi.co.uk/usedcar...bhp-all-wheel-drive-blue-1_GBR00272903148.htm
So if they don’t have red stitching on the knee pads, and the pads are still alcantara and not leather/fake leather, no idea why
Never seen the alcantara knee pads with anything but red stitching, not to say there aren’t any out there though!