I use my Zed as a daily driver and do around 200 miles a week to and from work on A-Roads .. 
  
I usually fill up £50 on Monday morning and that lasts me until the following Monday morning ... 
  
I think I get around 22mpg on average ... there have been a few weeks where I have got 26 but mostly it's in the 22 - 24 mpg mark ..