Originally Posted by Roffles

I know it's a different car and a different price bracket with a different power train, but I can do 26-27 mpg in my IS F if I baby it. It'll do 27-28 at 70mph cruise control and 29-30mpg at 65mph cruise control. I was searching the forum for Lexus mpg comparisons and was surprised to see my car can be as efficient as the is350. I can't help but wonder if any isx50 owners skipped on the F as an option not knowing this. But I have to be honest, the thing is a complete pig when you're on the throttle.