josephx66

iTrader: (4)

Have any of you guys noticed that your tank drops way fast? I drove it till the range was zero and it only went to 14.5 gallons and its a 17.2 gallon tank! is this normal? i got the is250 sgm

darkdream

The reserve is 2 gallons; it states in the owner's manual.

600rr05

iTrader: (9)

not sure i usually fill up once my light turns on...

josephx66

iTrader: (4)

ok so its normal that it leaves extra in the tank even with the range at 0miles?

alpha318

Yes, that is normal. It is normal for most cars to have reserve in the tank.

BAP077

Has anyone noticed that your avg mpg/tank avg mpg is about 10% greater than the mpg you're actually getting when you compute it manually? I.e. Miles driven divided by gallons of fuel used. Just wondering. You'd think a computer would be more accurate than + or - 10%. My other cars computer are much more accurate relative to the actual mpg.

alpha318

To be honest, I haven't come across a car that the trip computer calculating avg mpg has been accurate. I take it with a grain of salt since I calculate avg mpg manually and it's seems to always be off.. It's close, but not usually exact.

kickin8

iTrader: (1)

it's not that good to drain the tank all the way to the empty....

vdubturbo

So when it told me I was getting 31 mpg highway last month, it wasn't true?

TLe2006

It is stated in the manual but 2 2IS(caymandive and waynetech) owners told me that when they hit 0 miles, the car stopped. When they go to filled it up, it's only 15.xx gallons

josephx66

iTrader: (4)

ok thanks for the information it was very helpful

moo_juice

ok so my gas light just went on today.

my tank avg is 22.8
my mileage since last fillup is 278
our tank is 17 gallons.

so do the math, technically i should have about a 5 gallon buffer from when the light goes on until im running on fumes.

jracerlmn

i dont' know about that, i've filled up 16.8 gallons before. Was not happy about almost running out.

As for your miles left : it's not accurate. The computer bases it on past driving style, etc. That's what i'm guessing. In the mercedes it bases it on the last 50 miles.

Avg mpg : it's been pretty close for me. I got the car specifically for commuting so I have my eye on this. Fill up your tank to full, drive around and note the miles, refill to find out how much you used. Do the math and you'll find out it's pretty close. The only time it's NOT close is if you accelerate all the time like your car is on cocaine.

TLe2006

Ok thanks, good to know that it's actually 17 gallons.

tmaung

I think there is a difference between IS250 and IS350. Could someone verify?