J_Hao

iTrader: (1)

So after $45 can only fill up 3/4 tank of gas, I decided to drive like a grandma.

And I got THIS!

After 14 miles


After 110 miles!






I am very impressed by the MPG! NICE!

tedward88

iTrader: (11)

Move out the way grandma! Nice, wish I didn't have such a heavy foot. I only get an average of 20MPG on my 06 AWD IS250

Vroomin350

iTrader: (28)

^^ wow, on a 250? I drive a 350 and I am averaging 24

iRock

iTrader: (12)

Yea that's nice. I could never. I got 24 with the 250 I had

Sango

iTrader: (10)

It's most likely driven at on flat at near or at freeways speeds to achieve this.

That's still good for a 250 because for me, I've gotten similar or higher depnding on where I'm going. Most of the time I get at least 24-26 avg and going about 400 miles on a tank before refill, this is with mixed driving.
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Well there was that one thread where someone pushed close to a 1000 miles on their Prius before refill!

RDIS250AWD

iTrader: (7)

I watched mine drop from 23 all the way to 16 after adding a sub, box molding my trunk and quarters adding a lip kit and roof spoiler and 20s. Since I threw on my 18s for winter it went back up to 18mpg

birador

iTrader: (10)

driving downhill?

qtmac

i only avg 18mpg on my is350

carlos3366

averaging 27.3 mpg

MNIVET

iTrader: (2)

Holy ****.
No offense to anyone in this thread... especially you OP...
But the "MPG" gauge on your instrument cluster is the ****TIEST way in life to know your MPG's...

One time on a road trip to Arkansas, I filled up, Reset to 0.. went 70mph cruise control on for over 5 hours... it shows 36mpg...
I stopped by a gas station and filled up back to full and divided my miles driven since last fill up by the gallons of gas used and it showed 25mpg... the "amazing" instrument cluster mpg gizmo way 11mpg off... and yes, that was reading the one that says "tank average"...

That gizmo is a THEORETICAL calculation...
the vehicles ECM looks at numerous variables such as but not limited to the amount of fuel left in the tank, engine rpm, engine load (load is determined by the MAF, and the amount of air passing through it as well as Throttle position) and im sure HUNDREDS of other factors...

It just uses these factors and determines what your "MPG" is and displays it on the instrument cluster...
It is WAY off.. on every SINGLE CAR I have EVER driven...

If you ever go by that thing your a TOTAL moron.

Good luck.

NorCalIS

iTrader: (5)

I did the math on a trip, mine was only 2 mpg off in the wrong direction, saying I was getting 26 instead of 28. 11mpg off? Might want to look at that.

nosurprise

iTrader: (1)

hmm, how do you drive like grandma? I generally drive below 3500RPM. Get ~20MPG on IS350.

Kurtz

iTrader: (1)

on the highway?

Might wanna go see a mechanic.

I routinely get 28-30 highway in my 350.

Even city driving is usually 20-22.

GiantsFan

iTrader: (9)

I get like 24 average in my IS250!

rsg

I calculated 29.2 when the readout showed 30.7, which is not too bad. On my 06 M45 it was always +/- 0.3mpg actual.