Vpower means an £80 full tank. It usually takes me around 330 miles and I certainly don't drive like ms daisy.
If driven under 2500rpm, you'll see significant mileage improvement... towards 400 and beyond.
Like the guys say, it's all about driving style and in 3 years I have still haven't been able to resist the throttle on any one tank.
I would also say that my economy has been greatly enhanced by the new hybrid and manifold. My estimated range currently is at 450miles which is insane considering how I've been driving it today. I guess it's because the car isn't working as hard to achieve the same results.