+1 or at least, tank average is meaningful (+/- a couple mpg) at the end of a tank.

 

What matters is how many miles you drove and how many gallons you used. The car's "MPG" reading is never accurate, it's an estimate.

Jeff

 

No problem.



I get 90 MPG. AND my tank is on E. AND it's a 350



Realistically, I get this on total average. It used to be like 25.3 but my MPG took a major DUMP this past winter.

 

I drive a manual 250. Like all cars it depends what the temperature is outside and what gas mix you use.

During the summer I usually receive 30-33 mpg for the whole tank. That's a mix of city and highway. I've done a few full tanks in the summer of all highway miles, and got 34-35mpg. It was awesome. One time on a freak day where the wind was going my direction, I went a whole tank doing 38mpg. It was epic (a/c and radio on).

Now during the winter, I receive 25mpg on the highway. But, my lifetime average is 28.3mpg.

To answer the OP's question, I've gone over 500 miles per tank plenty of times in the summer. I usually fill up at around 470 miles though. The tank average calculation on the dash is usually off by 1mpg.

 

I usually get 26mpg with city and highway. If I am traveling mostly highway I get 30-33mpg. My last tank I drove ~420 miles before I had to fill up again.

 

http://www.youtube.com/watch?v=TuEdU_lrtZk

This immediately came to mind when I read this thread.

 

Sure, here ya go! And mine's AWD.

 

Here is mine. More realistic results, this is with a reading of about 6 miles left on the range approx. Almost was able to push 400 miles but not quite this time. This is probably due to more city driving since a family member had to borrow my car; I think the gas is still on the winter blend too.

Pics were taken while I stopped at Chevron before I refilled.

 

Most miles on a tank? 485. When I took a road trip up and down Cali. Had 17 miles left too, so I could have hit 500, but I wont run it that low.
Thread: https://www.clublexus.com/forums/is-...in-the-is.html

With my usual commutes, I usually squeeze out around 420 miles in a tank when the light comes on. Lately I haven't been driving it down that far though and i've been filling it up when it gets to 1/4 tank more often.

 

<------

In a 250, 70 mph steady cruise, you can get 450-475 miles on a full tank without issue. 500 would be pushing it, but doable.

 

Wow... I can't compete with those numbers. Highest mileage per tank I have gotten in TX was about 380.

Sorry, I'm a lurker more than an advent member but this is a good topic.

 

even on a new fill up and flat road the best ive been doing lately (winter) is 28-29, cruising on the highway my display shows 24-25, never have i seen my display show anything higher than 35(summer)...even tho the display is only an estimate i see horrible gas mileage for city driving,

my average rating on display is 20-21

 

Good question!

New years I drove up to Canada and got an average of 400. Most I got was 420 miles to the tank!

...down here I get 280 max @_@

Also yeah, showing the tank mileage is bs. During fillup just divide the total miles since last fillup and divide by the number filled.

 

I always fill up after my gas light comes on. The best I did was 265 miles on a full tank. IS350 with 90% city driving and 50/50 grandpa and fast & furious style driving. Is this bad or normal for an IS350?

 

I'd say that's normal on a 350 if your doing mostly city driving and then half of that is F&F style as well lol. City driving alone will put a dent in your MPG.