RenaultSport clio 172
Yep managed to get 50.9mpg over a 52 mile run yesterday in the 172. Was all on A roads and dual carriageways and to be honest I was trying my best. Decelerating at the slightest of hazards really makes a difference and keeping it at just under 60mph most of the time. Not sure how accurate the readout actually is but I was very impressed.