I've heard Royal Purple works wonders. Do you have it in your tranny too?

 

I have 9K on the odometer. I average 31.4 mpg overall. I checked it on a recent highway trip and got 37 mpg.

 

I've got 2200 miles on my 2008 MC. MPG has stayed 35.4-36.7 for all of my tanks. I'd guess that I do 65/35 freeway/city. I changed my oil at 1500 miles, used Castrol 0W-30 made in Germany label.. I do 5 mph over posted speed limit where ever I go ( except on streets in P.G., I do posted speed.. Barney Fife is alive and well here ). My Mini is still stock, sport mode not usually engaged, and what I find interesting is that my mileage is a bit less now than when I was breaking it in/ accelerating, decelerating aggressively.. Summer fuel? I have only put Cheveron 91 octane in it.

I'm curious about my tach readings as well. At 70MPH in 6th gear It's twisting 2850-2900 rpm. Is that what others are seeing?

Thanx,

Bill in P.G.

 

I get about 28, HWY / street, in NYC.

 

A SUV probably gets <15 mpg in NYC.

 

We just went on vacation. Drove from Dallas up thru Kentucky to Washington DC via WV, VA. Back via NC, GA, AL, MS, AR. Got an average of 35.3 for about 90% of the trip (3170 miles). When we pulled out of Dallas we had 900 miles on the car. The best tank provided 38.6 MPG and that was running up & down the mountains of WV with the turbo on as much as I could push it. The worst (and this is wierd) was highway mileage travelling across NC from the Outer Banks to Asheville at 30.3 MPG. All gas was from top tier stations (Shell, Chevron mostly), but the weirdness of those low numbers vs the high makes me think that even within top-tier, there's differences.

Around Dallas I was getting about 26/27 city but it was all during break in, so I'm real interested to see what she does on this next fill up.

 

I've noticed that my mpg increases a couple of tenths when going to work in the cool (78F) and I lose that gain coming home (90F) over the same roads (mostly flat) and at same speeds.

I guess it's all due to temp.

 

yeah, that is normal.. I don't know the figure off the top of my head but there was a study that for every 10 degrees increase in external temperature is an XX increase in fuel consumption. The colder the weather (to an extent), usually the better the gas mileage.


BTW, today I registered 42mpg hwy!

 

I just finished a 500 mile trip with my '03 MC and she got 31 mpg using 93 octane. I know that doesn't measure up to the new MINI's, but for a 5+ year old MINI with 90K miles, that's not so bad!

 

Revray,
Not bad at all. Beats many new "fuel efficient" cars on lots today.

I've got a major error in my OBC mpg readout. I've calibrated a correction table that puts me within 1 mpg. Using that table, I'm clocking 43 to 44 mpg on my flat roads, 70/30 hwy/city, 65mph with a/c, calm driving with a short bit of playing on a couple of curves each way.

Last calculated mpg at pump was 41.78mpg, but I was playing more.

 

Yep, mine goes 74mph at 3000rpm in 6th, 65mph in 5th.

 

I'd say that probably 85% of my driving is in town, in stop and go traffic and according to my on board computer I'm getting 30.5 miles per gallon as of the last tank. I exclusively use Shell V-Power gas and I love the look on the Escalade driver's face when I pay less for a tank of premium than he does for a tank of regular...

Is it wrong to feel good about that sort of stuff? :-)

 

Hey mysticturner, my best MPG was on my very first tank, 37.40 MPG, when I was driving windy roads and increasing and decreasing speed, and staying off the freeway. Go figure..

Bill in P.G.

 

Driving much more sanely these days to conserve fuel, my modded JCW (gen 1) is now averaging 33.6 mpg versus the 22.1 I was getting with a lead foot.

 

I've also found that I lose 2mpg between 50mph and 70mph.

 

I've been getting an average of about 33-35 Mpg mixed. 38-41 Highway, i havent noticed the city as much as the highway, but it when its found the average it stays at about the 33 for the city, havent seen anything less than that, instant mpg says other wise of course. Been driving fairly conservative normally, not interested in another ticket, 1763 miles Mcs auto.

 

Has anyone ever tried going beyond the "1 mile left" indicator? If not, I'll do it.
I want to know how accurate the computer is and how long the car will run on empty.

 

Yikes! Tell me how that goes for ya

 

I just finished 2 legs of MTTS2 to MIA and BOS. Total of about 4k miles (driving to/from Philly). My goal was to get 500 miles per tank and on the last leg of my trip home from MIA I made that! A whopping 540 miles...so that's an average of about 38 mpg. Good thing is I've been able to maintain that hiway mileage since then. Avg city is about 32-33 mpg. Btw, I've noticed a considerable increase in mileage over the last few months (previously only averaged about 340 miles per tank mostly city) so needless to say I'm extremely happy !!!

 

There is a post around here somewhere that warns you can damage your fuel pump and something else by running the car dry.

So, as the other poster said, let us know how that goes for ya.

 

I've been where dashes replace miles to go several times.
Supposedly, the number of dashes decrease as the miles go by, but I've never seen that effect. I doubt that happens but I'm not going to try either.

 

I've done it too - in a loaner Clubman. The number of dashes didn't change.

 

Did it still show one 'petal' on the 'fuel gauge'?

What would be the maximum us gallons ever needed to fill?

Just watching that "miles-to-go" against odometer at a steady interstate drive (of over 100 miles)
was enough to see that the computed data was unreliable.

 

I'm pleasantly surprised at how good the MCS is fuel economy wise. Its still too early to get really meaningful data, but the first fillup, was mostly freeway and I got ever so slightly better mileage (29 vs 28.2) than Tristan did for his first fillup. Tristan's first fill up was also mainly highway, but I was trying to be economical, I wasn't trying in Shawn.

This latest fillup, I went a week trying to be as economical as possible (which is very boring) and Shawn got 1 MPG better (31.9 vs 31) than when I tried the same thing in Tristan.

Driving in my regular fashion Tristan is still more economical, but Shawn can do better than him if I try hard enough.

 

I have an 07 MCS with 15k miles on it. On this current tank of gas, I have 415 miles and going and am averaging 41.2 MPG. Driving conservatively: lots of cruise control, lots of coasting (to stop lights etc) and generally driving slower.

Before changing my driving habits, I was averaging around 33/34 mpg.

For what it's worth, I use 89 octane gas...