For those of you interested in some number crunching ... I filled Stewie up today for the first time from empty. (Computer stated, with much binging and bonging, that I had 6 miles remaining). I would not have let it get so low, afterall I had 19 miles remaining when I first reached the gas station WITHOUT my wallet!

On my previous top-off I reset all computers and topped off with Chevron Super. (It still had 1/2 tank of the original fuel in it)

Anyway, here are the numbers:

• 50/50 highway/city driving, flat terrrain
• 33 aprox avg MPH
• A/C on 90% of the time
• 380.5 miles driven
• 13.605 gallons at fill up
• 30.6 MPG computer calculated
• 27.97 MPG hand calculated
• 2.63 difference between computer and calculator
• $4.15 a gallon total cost $56.58
• .15 cent cost per mile
• 693 total miles to date

Refuled with Chevron super unleaded 93 again, will post results at next fill up. How does this compare with the other Clubbies out there?

 

I filled up this morning using Mobil Premium 93 octane

justacooper Clubman with just over 1000 miles on it. . .

Hand calculated:
Drove 366.6 miles since last fillup - all city driving
The tank took 12.85 gallons
Which equaled 28.52 MPG

 

You had about .5 gal left in the tank. I get about the same mpg for that avg speed. My OBC is usually .2-.5 mpg less than my calculations. Yours is way more, but I bet that corrects with time.

 

Hand calculated:
Tank---MPG
#1------35 (wife was trying to learn how to drive stick)
#2------39
#3------38
#3------39
#4------37
#5------42.7!

(Manual transmission, non-S)

 

I forgot, mine is a manual also, S.
What are the details about the 42.7? (tim781996) Brand, octane, A/C, City/highway, etc. That is great.

 

Irving 91 Octane, A/C on all the whole time, 90% highway, cruise control set at 65, outdoor temperature range between 60 and 85 degrees.

 

Whew! I was starting to sweat, looking at the other numbers.

 

Cooper S Manual with California Summer 91

Mixed driving OBC 31.1 actual 29.2
Highway (Milking It) OBC 37.4 actual 33.8
Low - Traffic short trips OBC 27.3 actual 24.7

 

Automatic Clubman S 2nd fill up tonight. Using BP 93

OBC
33.6 mpg
avg 30.9 mph

Manual Calc.
31.3348 mpg

 

I drove to Richmond yesterday and on cruise control was getting around 50mpg! That was just amazing!

 

Don't believe the OBC.

 

What he said. The display on my Passat was uniformly off by almost exactly 1.5 MPG.

 

Hey, 1.5 mpgs is not a biggie - in my not so humble opinion. For those who like to do the calculations with every fill up - go for it, and definitely post...but there are some of us who are just too lazy and will be fine with the OBC, given at least one non-OBC calculation.

There is a fellow who posts regularly on MINI2 who is very scientific in his calculations...perhaps you might enjoy reading his posts. His name is Dr. J and you can read about his ongoing experiments here: http://www.mini2.com/forum/mini-club...orld-mpgs.html

 

+1

I am curious, though, and would like to know what you all *do* with this information? Other than for "record keeping", does it serve some sort of purpose that I'm just not getting?

Thanks!

 

Modify driving habits? Prepare class action suit against BMW? (I keed)

Just curiosity I guess. I want to make sure that my MINI is performing as well or better than EPA estimates...

 

Gloat.

 

For me, it is just pure and simple OCD. I even made up a sheet that fits in the armrest of the car I drive now so I can keep up with mileages for a year at a time. I know, I can't help it.

 

 

Filled up the Clubman S today. Manual with 60% highway@70mph and 40% city 38.3 mpg manually calculated. OBC says 39mpg.

 

Too much!

I started keeping a log when I got my first car, largely because that's what my brother did. That was back in the day that fuel taxes were deductible (for him). It also let you know if something might be amiss with the engine tune; much less likely now. But, it lets you know if certain fuel works better or worse, the impact of oxygenated fuel in the winter, running the AC in the summer. I also keep my maintenance record in the same log.

Okay, those are just justifications for being A-R.

 

93 Octane, two tanks. Averaging 30mpg 50/50 city/hwy.
The S has plenty of giddy up. 172 hp
The non-S didn't have enough. 117 hp
I they'd had a 140 hp Clubbie, I'd have bought it!

 

Yikes - I didn't know a MINI could go only 65 on the highway! That might be why my numbers are a tad low.

Anyone have numers that compares mid range fuel with super? After this current tank of 93 I will try mid range.

 

Tracking gas mileage is also a great additional way to keeps tabs on your cars' health. Many fuel system / computer / ignition system problems will manifest themselves through lower mpg before getting bad enough to trigger a 'check engine'.

I put a vacuum gauge on my '78 Subaru way back when and drove with that for a while. It was amazing in a car with a carb' how much better one could do on mileage with a bit of training with a vacuum gauge.

 

It wasn't easy at first, but I got used to it. Now my wife on the other hand...

 

Shoot - the speedometer indicates you don't even need to fasten your seatbelt until 70! -