Worse this time of year since it is idling to get warm to save petrol.
OK then, towing on motorway around 65mph I get around 17mpg allowing lower gas energy density that is better than 2.0 at 17mpg petrol.
Cruising without van - no long trips so far but I have got mid 20s on a shortish run.
However I think it is time I cleaned the air filter, and check the calibration of the LPG system - local chap called Bernard will do it for £20 or so - he reckons I am runing too lean.
I think a richen at mid throttle would help consumption a bit.
To be honest at less than half the price of petrol I am not too bothered as the V6s sound so nice.
Anyway it is going up from 13 quite quickly as I had an easy drive to work.
Stop start on the V6s cripples fuel consumption, I haven't yet worked out how to get decent consumption from a V6. Perhaps I should not accelerate as hard, or go slower. Also mine is an automatic.
My commute is along country lanes and I cannot keep at a fixed speed.