I got 340 today from £40. That was with aircon on half the time and doing 80+ a lot of the time. Not bad going me thinks.
That is good to be honest, more than a Gti would do.
I was well surprised, as usually my MPG is rubbish but this did it with ease 
Put it like this £100 in my Bmw gets me around 480 miles of mixed driving.
so you agree bmw's are rubbish???
Nope, I never expected my 5 series to be very good on petrol, it is a big heavy car with a 6 cylinder engine plus its an auto.
To be honest this month it has only had a few long runs, I never normally do that amount of miles, just a few friends have lent it for various reasons.