Some interesting figures there. I've found that my n/a 2.5 10v V70 auto returns 24 to 26mpg on LPG over my usual usage - a daily 56-mile round trip commute, mostly at motorway speeds.
The surefire way to improve on that is to keep the maximum cruising speed below 65mph. On a couple of long trips from Yorkshire to Devon I've managed over 28mpg. Not using the aircon can make a difference too I've found!
In all the time I've had the car I've never done an equivalent week of petrol-only motoring, but if the trip computer is to be believed, the best petrol mpg averages out at 30 to 32 mpg.
Taking these figures, my LPG mpg is around 80% of my petrol mpg. This is quite at odds with the 65% 940-Turbo has been getting!
Does a turbo make a difference? Is the 'lower energy content' of LPG compared with petrol more critically exposed in turbo-charged engines?
Jack
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