GiantsFan

iTrader: (9)

Im at 23.5 average right now. (IS250 ... equal mix of city and highway)

IS-SV

About 22 mpg mixed in suburban commute on the IS350.

intellis

Im at about 22MPG and 22.9 for average tank MPG. I drive 70% city 30% highway

Phresh2010

iTrader: (3)

on my awd is250 ive gotten as high as 36 mpg, on a good day i get 22 mpg city driving and on a bad day it ranges from 19-20

IonSpray35

I do use the digital read out to gauge my mpg, but it is off by 2 mpg, give or take, very often. I find that it depends if I start off very high, around 29 mpg, then drive a bit harder, it'll dip slowly, whereas if you start low, around 22 mpg, and drive easy, it'll raise to around 26-27 mpg, but in the end, get approximately the same miles per tank. But in the end, your total miles between fill-ups is the best gauge. I've gone as low as 320 miles per tank (about 20 mpg), to now 420 miles (about 26 mpg) per tank. I fill my tank and do not top it off, and use those gallons to calculate my mpg. I typically get 16 gallons when I fill up. The most I have ever filled was 16.5 gallons , meaning I have about a gallon left. The most miles I have ever gotten out of a tank was 445 miles, about 27 mpg.

I mostly drive highway now for work, 70-80 miles a day, driving anywhere between 65/70 to 70/75 mph.

I find at times, driving quick in traffic while keeping it on ECT Power, keeps the mpg close to driving normal and just cruising. Power mode is good for rapid acceleration/deceleration, and in terms of mpg, will keep it close to cruising at nominal speeds. Accelerating at high gears is inefficient. Mpg is a trade-off between good miles and good acceleration.

Lexitegra

iTrader: (2)

[IMG][/IMG]

metalgear

^^^Whoa! Wish I could get that. But I only get 21-23 for mine. Mostly city for me.

Acingteam

iTrader: (2)

I have an '08 AWD IS250 w/ 48k miles.

City: ~ 17 MPG
HWY: ~ 26 MPG

^ Seems a little low. I drive really easy, never WOT. And the car is 100% stock.

pli

iTrader: (1)

man! my tank average is very poor. idk whats wrong. im getting around 13mpg on the tank avg

new.era.13

iTrader: (10)

my average is bad.

my tank average is only 18.5mpg. Mostly city.

and i have a is250

Kurtz

iTrader: (1)

you're either doing something very very wrong, or something is very wrong with your car.

(air filter, spark plugs, something...)

I've never gotten less than 16-18 out of a tank and that was all really bad city driving... my lifetime average is more like 23 or 24 I think.

ISRocker

iTrader: (1)

The computer in the car says "Tank Average 22.4". But when I calculate it by using the odometer reading and number of gallons to fill up the tank I get 20.96 mpg. This is the second tank of gas for a new 2011 IS 250 with the upgraded 18" wheels...

KillaIS250

iTrader: (1)

Dang why is everyone's gas mileage lower than i expected lol

Currently im at 29.0 MPG average and 30.6 Tank Avg

70% highway, 30% city

07 IS250

IS-SV

You answered the question above.

cloudstryf

I have an '06 IS350 w/ 63k miles.

21.1 MPG average
2.23 Tank Avg