I have had my GS300 for 3 weeks now and the fuel consumption is far higher than expected .Is it worth me going to LPG , will it make a terrific amount of difference .The only other option i have is to sell car :( and buy a diesel toyota colarado (the car the wife wanted in the first place ).its a mk 1 GS300 sport 30,000m full lexus history aspen green, 11 months and a week warranty ;) (lexus ).any advice welcome .