Managed 468 miles between refills recently. 0 miles left on the range indicator but only managed to squeeze 58 liters in, so 3 liters still in the tank and a real-world 36.7mpg.
It was a long, steady, mostly motorway trip, four shortish stops, with no hooning and maybe 40 miles or so of heavy conjestion and partly stationary queues. Efficiency mode (yawn) and Shell V-power. Not that I ever believed it but quite how Audi came up with 44mpg for the "extra urban" cycle is a mystery. Maybe in one continuous drive and all downhill.
The computer must have thought there was a new driver/owner as the next day it recommended to enable Stop/Start to improve economy. It hasn't made that mistake again as I've been in dynamic mode ever since.