I had my Aurion converted just over 10000k's ago and it is great. It will do 10.5l/100km on the highway (very cheap running when you are paying 50 something cents per litre). You only know you are on gas when you have your foot buried and even then, the performance difference is only just noticeable. I do about 30000k's per year, so the cost (after gov rebate) will be made up in just over one year. Could not be happier.