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MINI Cooper MPG-Real World Numbers

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Comments

  • morgan5morgan5 Posts: 13
    I have a 2006 Cooper S and given where gas prices are going, I want to know if anyone out there has tried burning regular gas in their Cooper S. If so, what were the results? I've been told, that the car's computer makes adjustments for the octane being used, but that information did not come from a Mini mechanic.
  • waterflamewaterflame Posts: 22
    Actually, the Mini salesperson told me this as well.I'm not sure what the mechanism is, but I think the onboard computer gauges the octane content of the fuel and makes adjustments accordingly.Not sure how it would affect acceleration or efficiency.

    On a side note, the difference between premium and regular is usually about 20 cents, which means that you're spending about $2-3 every time you fuel-up. Unless there is a significant difference to be gained in mpg by using regular instead of premium fuel, I don't see much of a saving over a year.
  • morgan5morgan5 Posts: 13
    Around here (Virginia Beach), the difference between regular and premium is more like 25 to 30 cents, but I agree with your assessment waterflame. Thanks for the reply.
  • freelejofreelejo Posts: 1
    For my non-turbo mini I have been fueling with 89 octane since 91 is not avaiable at all pumps in my area. For grinns I called the dealer service center yesterday to get their opinion. Before the mini I had an 01 Passant and it stated I had to run premium 91 Octane, but the service center said 91 Octane is he Euro rating and 89 Octane is the equivalent here in the states. However, the Mini service center said for the mini 91 is a minimum, but you can also burn whatever you want. What might happen is you might get a check engine light, and in the long run the regular gas will not do well for the valves. Since regular gas for mini doesn't burn as efficient as premium you will see a carbon build up on the valves which means down the road you may suffer with worse performance than just the loss of MPGs.
  • coupahcoupah Posts: 18
    The onboard computer on my '05 BASE convertible, 5-peed manual, calculated 35.3 MPG. I did not reset it for six months. I ran premium fuel per mfg recommendations.

    My '06 S, with a 6-speed yields just 25.2 MPG. I drive it hard and sporty, if you will.
    I use, per MINI (and BMW and Honda (maybe toyota)) Shell. They also recommend Cheveron and I think Phillips66/Conoco as THE fuel that meet their specifications but only SHELL is available in my area (Boston).

    The above mentioned companies collaborated and recommend those fuels for their engines.
    Much has been written about engine performance and durability relative to fuel and fuel additives. It goes way beyond performance loss/gain. Most important is cleanliness of the fuel system and specifically the injection system.
    I plan on keeping my MINI for a longtime and want to see how long it will last!
  • My top mileage for my Mini '07 (the lower priced model, automatic transmission) was on a recent 250 mile road trip. The peak MPG was 44.9 for about 150 miles of driving in the 40-55 MPH range on a highway with zero braking. For the entire 250 mile trip, with some 65-75 speeds, averaged 42 MPG.

    The cool part is for the entire trip I drove behind a Prius. The Prius got 47.5 MPG when I got 44.9 (I tried so hard to get it to 45 but I had to pass a car right at 44.9, and speeding up cost me that final tick) and for the entire trip, the Pruis did only 3-4 MPG better than the Mini. Pretty impressive. I drove it very carefully without A/C and almost no braking the entire trip. Just two passes at higher speeds.

    Otherwise, in mostly city driving, I'm getting in the 27-30 range in winter and summer with A/C running. With heavier highway driving, I'll tick up to 31-35 for the whole tank. The 40-plus is certainly the exception, but for a long road trip, absolutely possible. The key, though, is keeping the speed lower than you'd typically want, so it's a tradeoff going 60 instead of 70 in a 70 zone. I typically wouldn't be so worried about losing a few MPG ticks to get somewhere faster, but I wasn't in a hurry on this trip and wanted to test the absolute limits of the MPG in perfect flat 60 degree no rain no braking driving conditions.
  • Last summer we drove our 2006 Mini Cooper from a small town south of Houston TX to Phoenix Arizona and back with an overall average of 41.5 mpg. We also mostly drove at 60 miles an hour just to see what optimum fuel efficiency could be. Generally we get 36 - 37 mpg per tank commuting 20 miles to work.
    This summer we get to try with our mini clubman s which won't want to travel at 60 mph.
    Am looking for a 40mpg club bumper sticker.
  • morgan5morgan5 Posts: 13
    Everyone talks about highway miles when discussing MPG, but I'm more interested in around town driving. My daily commute in my 2006 S is about 15 miles in stop and go traffic (no interstate or highway). Usually, I get about 22 to 23 MPG around town. Now that the temperature is getting hot I am running the AC most of the time and my MPG has dropped to 18-19. Is this normal?
  • I've gotten 28 MPG under the worst of conditions - super-short stop and go trips with A/C on and somewhat fast acceleration. I'd say that's the bottom in the "entry-level" automatic transition model. It probably gets better as the car gets more broken in. That is using high octane gas. You don't want to use lower octane or it'll drive poorly at slow speeds, such as in parking lots, where you'll think there's something wrong with the car as it seems to search for the oomph to get going.
  • morgan5morgan5 Posts: 13
    Minidrivermn, are you driving an "S" with a supercharger, or a regular Mini?
  • british_roverbritish_rover Posts: 8,476
    18-19 seems rather low as I got about 25 mpg in a 2004 MINI Cooper S with a similar style although shorter distance commute.

    Are you using premium?
  • morgan5morgan5 Posts: 13
    Yes, I'm burning premium, but leven so, the MPG really seems to go down when I'm running the AC.
  • Regular Mini. Not the "S" with the supercharger. As I posted earlier, the range is huge. The worst case scenario is in the 28 MPG range (bad weather, hot weather with A/C, starts and stops, very short trips, heavy on pedal) up to a 250 mile trip of 44.9 MPG without braking once and driving 50-60 MPG and no heavy accelerating. I think that's probably about the widest range anyone could produce with a Mini. Typical mixed driving will for sure be in the 30s, but high-30s is only likely with mostly highway driving, below 65 MPH, and good weather without A/C.
  • I have seen some postings regarding this but I will ask again anyway. I have only had my MINI for about a week. As I was leaving the dealer told me I should use 91 octane. It is not always available, so when I filled up for the 1st time, I asked the gas station attendant if I could use 92 octane. (I figured the higher the better!?) and they said yes, it really wouldn't matter. Since then when idling and at low speeds my MINI is really sputtery. Is this because of the 92 octane? What should I really use, despite what the dealer told me? I have heard different stories.
    Thanks in advance for any input.
  • busirisbusiris Posts: 3,445
    have seen some postings regarding this but I will ask again anyway. I have only had my MINI for about a week. As I was leaving the dealer told me I should use 91 octane. It is not always available, so when I filled up for the 1st time, I asked the gas station attendant if I could use 92 octane. (I figured the higher the better!?) and they said yes, it really wouldn't matter. Since then when idling and at low speeds my MINI is really sputtery. Is this because of the 92 octane? What should I really use, despite what the dealer told me? I have heard different stories.

    It is not the octane causing the sputtering. Your Mini will run acceptably well even on 87 Octane gas, although the mileage will not be quite as good. My wife's 2005 Mini runs on 87 octane beautifully. I would guess you are running a poor grade of gas currently.

    I would suggest using a different, name brand gas (ie, Shell or Chevron) for a few tankfuls and see how it performs.
  • ilovebatzilovebatz Posts: 1
    We took a stock mini (non-S) from Evansville, IN to the Pacific Northwest and back, about 95% hiway driving, 5500 miles, and achieved 39.5 mpg. We used premium fuel at almost every fillup, a couple times we used plus. Best tank was 45.5 mpg, worst was 35.0 mpg. Didn't keep track of which gas had ethanol. Speedwise we averaged between 65-75 mph for most of the trip. We thought about taking the CRV but took Mini instead. We did take out the backseat so we could fit our camping gear. It actually worked out quite well.

    I was impressed.

    Regards,

    Harry Faulkner
  • ltqltq Posts: 28
    I have a Clubman S, which shares the manual with the Hatch. It clearly states that premium is highly recommended, but also that 87 gas will NOT hurt the car nor void the warranty. Read the manual!! The knock sensor takes care of the car. As to whether the extra price of 91 gas offsets the poorer (as reported) mpg from using 87 gas, I don't know *yet* .
    I am getting 33mpg real (measured by gas fills of 91 octane) in mixed driving (31 mph average on a tank) on the turbo Clubman automatic (the worst mpg configuration). But I've got a couple of years of gas-pedal training from driving hybrid cars...... this makes a BIG difference.
  • 08 Cooper MT...average 38-39 mpg, highway driving 42-45.5 depending on top speed. Have all season 15 inch wheels and when I switched for the summer for 16 inch runflat summer tires mpg dropped about 2 mpg...
  • tezzztezzz Posts: 15
    80% Hw 20% Local actual 31.8(Miles/Gal(pumped gas) on baord computer 32.4
    Avg. 75-85 M/H on a Hw
  • I have an '09 classic and the speedo is 10% inaccurate. My actual speed is 10% less than both speedos say. I am from Canada so the readings are in kilometres but the difference is still there. This also means that my odometer is racking up milege 10% in error as well. Contacted dealer and was told there is nothing that can be done. I checked my speed with my GPS unit, knowing that is accurate. Anyone else with this problem? Makes gas mileage figures better than they really are.....
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