i've had the stubby for nearly a year and if you live in London and listen to magic fm (and who doesn't have that tuned into their radio) I can confirm that I start losing magic's signal around junction 12/13 of the M1 which is pretty pretty far up north. This is the same with the standard bee sting aerial that came with the car. I think the Mk5's have dual aerials the bee sting and one built into the rear window. Not sure but that's what I thought I read on one these forums.