Hi Guys!
We're not owners yet, still shopping!
But I can chip in on the LPG front. If you've had them before you'll know the sense of satisfaction when you fill up of course. And not giving the petrol giants big profits too.
Our Subaru Outback 3.0 H6 is quite a lot less economical than your 2.4 Alphard, 21 mpg round town, 28 to 31 maximum on a good run, but naturally that meant it was paid back sooner.
This time, because I did it to save the money when petrol went right up, I kept a record of fill ups, and LPG vs petrol costs at that time. Mostly 80p litre over the 2 years, even when petrol was £1.90. The Subaru HATES the E10 petrol, flat as a thingy and less to the gallon, but is sound on E5 which of course is now "higher octane" so that was another cost factor.
Having just looked at them, I have saved £2010 in 12,900 miles, at around 24mpg - so not good economy but great at the price!
It was converted in Manchester, and I wish I had gone to the guys I saw in Leeds, as they didn't do a great job this time, which is a shame as it is the 3rd they've done for us. Cost for a BRC kit was £1500. An LPG TECH system on a previous Grand Voyager was £1200 and was just as good, but they were only doing BRC 2 years ago when the Subaru was done.
I'll not be getting our Alphard or Vellfire done by the Manchester guys, no way.
The Voyagers do a little less, 2 to 3 mpg on gas, and they are RUBBISH to start with at 18 round town and the heady heights of 25 on a run, but the Subaru is the same - yes I know it shouldn't be, but it is, must be to do with LPG having a higher octane rating and a high compression engine loving it.
Go on, get it converted, you will save the money eventually! 😄
Cheers!
Nev