Mine gets about 9L/100km at cruise and about 10L/100km when I drive it around town. When I get around to a new ECU I'll definitely be getting a lot of attention paid the the cruise map settings.
QR set the minimum of 30 because their insurance hit them with a massive premium increase after some things that were said on another forum that their insurance saw, so now QR need to make more money off happy laps.