DixieLex

XSV

iTrader: (1)

You should try manually tracking your MPG. I use an app which logs the odometer milage, gallons filled, and price per gallon. I find the car's system isn't accurate in calculating MPG.

Nikon

iTrader: (2)

the car's mpg is definitely not accurate. you are definitely getting lower mileage than you think.

with that as your tank reading... you're probably actually getting around 30mpg. maybe a tad bit less/more.

DixieLex

I realize its somewhat less, but it beats my 12 mpg in my old F150

Brian7

iTrader: (2)

I hand calculated the last tank in my IS350 and compared it to the tank avg and it was pretty close. Tank avg read 25.3 and I hand calculated 25.05. 33 is good though! I still want to try driving around in snow mode for a tank and see if it really helps. Bogging the motor too much could lose mpg too.

Bichon

Oddly enough, on my car, I find that the displayed MPG on the trip computer is conservative, and my hand-calculated mileage is actually about .5 to 1 MPG better than what is displayed.

XSV

iTrader: (1)

mine is around 2 mpg over than the actual calculated

Brian7

iTrader: (2)

I think this will vary depending on tire sizes. My car has stock wheels and tires.

XSV

iTrader: (1)

Mine are stock 18" wheels. Interesting to see how my MGP changes once I mount my new 19" wheels and tires.

Mike_1GO

iTrader: (2)

60 mile trip mostly highway