There is an article about living with a Twizy in CAR magazine. Look where the tax disc is located. Can you figure out where it is? Yes, it is inside the front wheel arch. Don’t see the point in that. Is it actually legal? I thought the tax disc has to be displayed at the bottom of the nearside windscreen. OK the Twizy is not classified as a car, but neither is it a bike.
Well it will be obsolete soon, so doesn’t really matter.
Since the govt has arranged to remove the need for any tax disc (and by extension, the need to display one) I doubt it makes much odds. As a Quadracycle the shown location is just as legal as any other. I keep mine with my front registration plate (in the boot).