Buy a very good second hand "old style" Jeep Cherokee 4.0litre Limited petrol and convert it to lpg.
1999 to 2002 models I think. Now available cheap, have leather, proper 4WD with low range, 3500kg towing (and will do much more!). With a variable choke LPG kit, you can get equivalent to 32mpg with a trailer. And they drive well!!
I wish I'd never sold mine!!
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