How big is windscreen washer bottle?

[SRGTD]

My mk6 GTD had the winter pack and it definitely took 5 litres. I know this as I use a 3 litre squash bottle to fill it.  Maybe yours is lying about it being empty.  Or they never fit the larger bottle with xenon only. It's mentioned in the winter pack extras.

I had xenons on my mk6 GTD but I didn't have the winter pack. I never consciously measured the volume to fill it when the warning lamp came on, but it did take much more than 2.5 - 3 litres.

[Mattyj]

Well thats odd i have headlights washers and my bottle takes 2.5 litres its a standard halfords small bottle

Are you sure you have washers? All GTI/D models have the washer covers in the bumper, regardless of whether they have headlight washers or not.

That said, when my warning light comes on, I can only get about 1.5 litres of screenwash in mine.

Hahahahahahah yes im positive unless when i use te wiper some random water just sprays out the bumper or when i stop the invisible runs over with some screen wash and wets my lights