I've owned 2 gas cars before, 1 factory straight gas and 1 was a conversion. Personally, I had some problems with the LPG system on the converted car. I also found fuel consumption higher than petrol, and with the cost of gas now, I won't go for gas again. I spent ages looking for my patrol, since I wanted a good condition GQ, that was petrol only. Wasn't too hard to find one in good condition, but awful hard to find without the gas conversion done. Having said that, I'm told fuel consumption might have been better if the engine was tuned for it, and I'm sure lots of people love their conversions, just not for me anymore. Any car I buy in the future will be petrol or diesel.