Good cars with LPG from factory or for conversion

Since my focus is only fuel costs of 5.25 euros (LPG+E10) despite not very slow driving methods, I am somewhat indecisive about the next car. A diesel should consume at the current low diesel prices (diesel costs a few years ago 1.80 euros) only about 4.5 l to draw the same with the old Focus. For this one is a turbocharger, high-pressure injection pump and nozzles as well as a particle filter. My wish for a new car would be: – gas-resistant 4-cylinder it, so from 115-150hp – Combi – automatic transmission – approx. a 70l tank (gross). My focus has a 63l tank (51,x l go in, which is enough for 600-700Km). Annual drive power approx. 55.000km. Of which about 40,000km work path (almost only highway and federal road). Ford has unfortunately only a 117hp petrol with car gas system in offer and also only with 5-speed manual transmission. Besides, I don’t know the gas tank size there. At Dacia there is car gas only with 75/85hp and only with laughing 33,6l gas tank. oyota Prius with autogas would be the hit (apart from the headroom at the back); but is unfortunately not offered. Do you have any other suggestions?