Have just gone over the 100,000 K mark in the Cho , thats only 72,000 K in 14 months , on petrol , if I had wanted to save fuel I wouldnt have bought an Elgie , why buy a thirsty big vehicle and then spend to make it economical ? , plenty of 1.9 T4s about to do the same job cheaper , however I wouldnt have met such a nice bunch of people on this forum , always ready to accept the diversity of the group and not judge or preach or use it as a marketing media .
72000Km (44738 miles) in 14 months, say you drove with a light foot and got 25mpg that's 1789 gallons of petrol costing £9770. Could have saved £4500 on fuel in 14 months, LPG conversion would have paid for itself within 5 months and you'd be £2900 better off already, £7400 better off in another 14 months. But like you said, you could have saved the same by running a diesel VW instead. But you don't seem to like diesel VWs as much as petrol Elgrands and it seems Steviejay doesn't like diesel VWs as much as petrol Elgrands either. And while you're not bothered about how much you spend on fuel, it seems Steviejay and most other people are bothered.
Why not buy the vehicle you really want and then spend a bit more to make it economical to run?
Saving £4500 every 14 months you could save enough to buy another Elgrand fairly quickly and, if you did then decide you didn't like LPG after it had saved you all that money you might not bother converting the next Elgrand to LPG. But you could look at it in terms that running an Elgrand on LPG for a few years effectively gets you an Elgrand for free. I know you don't like LPG conversions, not sure why though. Have you ever driven an Elgrand I converted? If so, could you tell the difference between running on petrol and running on LPG? Do you have any concerns about LPG conversions that would make you rather run a VW diesel instead of your Elgrand than convert your Elgrand to LPG if you didn't want to spend £7400 in 14 months on petrol?