theonlymo

Ive been watching my mpg very closely too. The tank size is 17 gallons, but the range only gives you the range for 15 gallons. When my car said the range was 1 mile i put 15 gallons to fill it up, so that might be where your calculations arent adding up. Im still only getting 15 mpg in the city and 23 on the highway, seems much lower than what the sticker said on the car. The dealer says that everything looks fine and the engine isnt running rich. Im not sure where the gas is going. Does anyone know what could be going on or is this something i just have to accept?

I took it to the dealer twice and the tech hooked it up to their computer. They say nothing is wrong with it and say that it must be my driving habit causing the bad gas mileage. However, i dont see how that can be the case, because even on cruise control i only got 22.5 mpg on the highway. I love the car, but am frustrated with the gas mileage.

Ive been driving it automatic, i havent tried the paddle shifters. Im using premium gas. My second tank of gas is averaging 16.5 MPG, that is half highway half city. I guess ill have to see how the next couple of tanks average out.

I just recently bought an 07 IS350 and am only getting 14mpg in they city. I was wondering what other people are getting in their is350. I am not driving it aggressively, so i was wondering why i am getting a much lower mpg rate than suggested.