Fuel mileage

[Cobra Jet]

I drive my 318ic daily as well, 110-114 miles per day actually.  Most of my driving is highway speed, with little traffic and only some traffic lights.  I drive @ 60-65mph for 90% of the drive (posted limit is 55mph).

No mods have been done to my engine, everything is stock as it came from the factory (oops - with the only exception being that all of the under-intake hose stuff is removed).

At each fill up, I reset my trip odometer and make note of my total miles driven.  Now, each time I have re-filled, my total driven miles based on the TO is 389 miles.  Each re-fill has been 12.6 gallons of fuel.  Based on my facts, I've been netting 31.12 mpg, which to me is good for a 17yr old vehicle.  My total miles driven and re-fuels are identical every single time, only because my route to & from is the same on a daily & weekly basis.

Now, when I do go for the re-fuel, my gas gauge needle is just about on the first white line @ the "R".  I've read that once the gas gauge light comes on warning of a nearly empty tank, there are at least 12 miles to go before the tank becomes really "empty".  If I'm getting 31 mpg, I'm sure I could possibly stretch out my remaining fuel so that I would get about 395-400 out of a single tank of fuel, but that is risky, so I will never attempt to do that... LOL.

It seems most 91/92 318's get anywhere from 25mpg-32mpg based on online forum responses.

[bmwman91]

I think that the gas light indicates 1.4 gallons of gas remaining.  One should have a number of miles left when the light comes on (goodness knows I tested that in college).

[tjts1]

I think that the gas light indicates 1.4 gallons of gas remaining.  One should have a number of miles left when the light comes on (goodness knows I tested that in college).

I think you're on to something. You can go at least another 30-40 miles once the light is on but you're gambling with the fuel pump.

[xwill112x]

i get about 25ish mpg when i shift at 3000.

but when i shift at 2000 and avoid speeding (yes its hard) and coast tons i squezed 36 mpg..yes 36.
i'd somtimes even cut the car off going down hills etc.
i just try n remember the m42 has the dual t-body and i try to keep the bigass one closed as most as possible :]

but after i fill up, the local school parking lot gets resurfaced wit ha frsh layer of rubber. cant drive like a granny ALL THE TIME

[///m42 sport]

I just know I can have alot more fun in my 318is compared to my 325i cab and use less fuel.  

I did get 32.8 mpg on my 325i cab on a 600 mile road trip recently.  Cruise at 60-65.  4.10 diff.  Rev at 2.5k.  Synthetic motor/diff/tranny fluid.

I bet the 318is could have done better.  I was just looking at bp eastclear's 318is site.  He claims 47mpg at 65mph!  Those hybrids can go fuck themselves.