i do mostly town driving, and the car is just a toy thats better on fuel than my a3 1.8t,
i get anything from 37-55. 55 with a long journey, 37 just grin driving
sorry to be thick but what does "venting" mean?!
under the filler cap, there is a little black nipple on the right hand side, once you've filled the tank normally, hold that down with the nozzle and will get around 10l extra in, once vented you can expect closer to 600 - 700 miles from a tank
Millers + Tesco fuel, 700 miles to a full tank.
PD100
However on a 55 mile round trip 50 miles are motorway, and most of that is between 50-70mph!