I accurately deciphered my mileage with opposite forms of driving.

[CleanAzzE30z]

I thought you guys might be interested in this, for shits and giggles. I have an M50 2.5 with MAF, larger injectors, ///M3 cams, ebay headers, Supersprint exhaust, CAI w/ heat shield, and custom chip. 91 octane.



With me driving normally. (half maniac and half normal):
-18.75mpg

With me driving uncharacteristically clamly (shifting between 2.5-3K RPM's, not downshifting when slowing down, coasting in neutral when possible, and generally driving as if I had injected lots of cc's of heroin):
-22.03mpg



I never do these kinds of things that require time, dedication, mathematical skill, and general discipline so I thought I would post it up.



Mariano

[DatUtahGuy]

I've been driving slow enough to drive Ms. Daisy since I last put a full tank in mine.

Shifting right before 2k
No downshifts on brake
Coasting
Rolling in 5th gear doing 20-25mph in residential areas
Cruise control in the freeway abiding by the speed limit

So far I'm up to 100 miles driven, only a quarter of a tank gone

My goal for this tank, 400 miles before the light comes on.

[Hick]

ive tried a few times, but never stuck it the whole way through.

most ive got was around 30mpg on a roadtrip. with a 14.5 gallon tank it took me to 420miles

[Raxe]

My best is 35mpg. 750km on about 50L. Early shifting, plenty of cruise control and barely any idling.

[daniel]

it makes a difference.

[E30SPDFRK]

I can never drive slow for long enough to get a good normal person reading. My Mom had to drive my car for a week though and she got 25mpg in all city driving. I get around 15 highway, lol.

[Erick]

My 318iS gets me 25mpg.... driving like an asshole and with A/C on full blast. :)

My 325i gets me 3mpg.... driving like an asshole and no A/C components left in the car :( Does get 30mpg cruising on the highway though :D

By the way Mariano, since you're running the numbers, how's the current weather in SoCal? I haven't seen your weather reports in ages! :)

[mikeedler]

I figured out last night that my M50 in my e36 crapbox sucks down a good 16/18 liters every 100km with a broken/ disconnected o2 sensor and 18" wheels at 170kmh!-- kinda sux!

[gearheadE30]

40 mpg average on highway trips, cruising at 75. Oh wait, I have an M42 :)

[Quadrajet]

^^^ What's your gear ratio?

[Germanautos12]

ive gotten just over 500 miles on one tank before in the summer. It was some g-pa driving for a week but I wanted to see if I could pull it off. Oh yea it was a m42 in my e36

[Quailane]

40 mpg average on highway trips, cruising at 75. Oh wait, I have an M42 :)

That's believable. I have averaged 45 mpg on highway trips in a dodge neon.

[Dave]

30mpg average for commuting cruising at around 80 most of the way in the 328is.

[Jean]

The most I have ever gotten in my m10 is 260miles on a full tank...

[DatUtahGuy]

m10 is supposed to be fuel efficient?? no?