I would like to know if is it to expesive to fill the tank of this car and everything else concerning the gas

Like #2 said, if you gotta complain about the price of gas then you either drive too many miles (move closer to work) or can't afford the vehicle. $2.5-$3.5 per gallon gasoline is here to stay. If you really need a mid-size SUV with powerful V6 I suggest you look at the new Rav4 and save $5000+ with all the same features as the Infiniti and a couple miles more per gallon, Rav4 might be bigger then the FX35 too. Anytime you buy a luxury brand everything else (maintenance, insurance, gas, depreciation) is going to be higher then a traditional vehicle. The oxymoron is that if you drive alot of miles you think you deserve a more comfortable and expensive car since you'll be using it more...of course that just ends up costing you even more, so depends on your budget. You shouldn't spend more then 1/2 of your annual salary on a new car, unless you are single living home with mom/dad.

if you are worried about the price of gas that you more than likely cant afford the car ; )

It's crazy to buy an infinity. Period.