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      08-11-2008, 06:39 PM   #1
garbagejunk
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BMW X6 vs Cayenne GTS on Nurgburing test

http://www.bmwblog.com/2008/08/11/bm...rgburing-test/

Though internal memo says 18 MPG on the xdrive50i. Wonder how they came up with that number.
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      08-11-2008, 06:43 PM   #2
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Quote:
Originally Posted by garbagejunk View Post
http://www.bmwblog.com/2008/08/11/bm...rgburing-test/

Though internal memo says 18 MPG on the xdrive50i. Wonder how they came up with that number.
Probably a typo or the 3.5 MPG number. Happens all the time.

I know they ain't getting 18MPG in the beast.
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      08-11-2008, 06:58 PM   #3
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Quote:
Originally Posted by chuck92103 View Post
Probably a typo or the 3.5 MPG number. Happens all the time.

I know they ain't getting 18MPG in the beast.

Could be a hwy mpg number or maybe even a combined number after fully broken in and easy driving. I am getting 12.5 in city with a pretty heavy foot and only have 210 miles on odometer so will surely get better.
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      08-11-2008, 07:13 PM   #4
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I'll go with shenard most likely a highway or combined number but agree
with chuck no way is that city. Time ( and 50i owners) will tell what real number is.
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      08-11-2008, 07:28 PM   #5
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Originally Posted by garbagejunk View Post
http://www.bmwblog.com/2008/08/11/bm...rgburing-test/

Though internal memo says 18 MPG on the xdrive50i. Wonder how they came up with that number.
The BMW Engineer I chatted w/ at the Plant!!!????..... Thanks! PalBay
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      08-11-2008, 09:51 PM   #6
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Quote:
Originally Posted by shenard View Post
Could be a hwy mpg number or maybe even a combined number after fully broken in and easy driving. I am getting 12.5 in city with a pretty heavy foot and only have 210 miles on odometer so will surely get better.
If you check fueleconomy.gov the BMW is the only one not using the rated mixed MPG number. The X6 is showing the hwy rating.

All three are rated at 13-18MPG. 15MPG average.

Why they would show mixed rating for two and hwy for the BMW is anyone's guess. I bet an internal employee grabbed the X6 3.5 specs by mistake.
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      08-11-2008, 11:22 PM   #7
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The BMW Engineer I chatted w/ at the Plant!!!????..... Thanks! PalBay
PalBay,
Aren't the ones at the plant pre-prep center, tuned like German BMW. Not detune like we get in the states ?
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      08-12-2008, 12:02 AM   #8
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PalBay,
Aren't the ones at the plant pre-prep center, tuned like German BMW. Not detune like we get in the states ?
dmlgc, I'm not certain.I got to thinking about the fact that speed limiters are installed at the VPC on inbound German made BMW's.So....does that mean a European bound 50i X6 is tuned differently than a US bound 50i X6???? Where I'm going w/ this is, would the gas mileage be that different for the two cars.Because of EPA Regs here in the States and I guess similar organizations internationally....you would think MPG would be all over the board...based on each countries specific regs.Your right, the BMW Engineer I talked to was driving a Korean 50i X6.Interesting question that I don't have the answer to.I'll ask around and see what I can find out.Thanks.PalBay
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      08-12-2008, 12:51 AM   #9
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PalBay,
I do know that my wifes 2006 330 came from Germany tuned as a German car.
It went like hell and mpg was great, then we received a notice from BMW stating we had to take it to a dealer for a software download or the car would not be able to be registered. Well we took it in, after the download not as much zoom and mpg was less than before. So I think somethings do get tweaked for the US market.
This may explain the "BS" mpg that we've heard. I will be curious what you find out.

Last edited by dmlgc; 08-12-2008 at 12:00 PM.. Reason: grammar
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      08-12-2008, 10:19 AM   #10
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50i X6 Gas MPG

Hey guys I found this at Autocar.co.uk in an article written by Mike Duff.I have no clue where the 22.3 MPG referenced in the article comes from.He says it's from a BMW generated Marketing piece.I've not been able to find the referenced BMW marketing article online.I don't know if the 22.3 MPG refers to Hwy....combined??? Just don't know.Thanks. PalBay http://www.autocar.co.uk/blogs/anyth...22mpg-bmw.aspx
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      08-12-2008, 12:09 PM   #11
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Palbay,
Autoweek had this piece which has 22 mpg combined, implies the estimate came from BMW ( claimed).

Producing 400 hp at 5500 rpm along with 450 lb-ft of torque between 1800 rpm and 4500 rpm, the V8 delivers 50 more hp and 100 lb-ft of additional torque compared with the X5's naturally aspirated 4.8-liter V8. That's enough power to launch the X6 from 0 to 60 mph in just 5.3 seconds--faster than a 650i automatic--while giving it a top speed limited to 150 mph and a claimed combined fuel economy of 22 mpg.

http://www.autoweek.com/apps/pbcs.dl...1581/1008/FREE

of course still doesn't tell us if this was for US version or export version.

Last edited by dmlgc; 08-12-2008 at 12:20 PM.. Reason: spell
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      08-12-2008, 12:24 PM   #12
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Quote:
Originally Posted by dmlgc View Post
Palbay,
Autoweek had this piece which has 22 mpg combined, implies the estimate came from BMW ( claimed).

Producing 400 hp at 5500 rpm along with 450 lb-ft of torque between 1800 rpm and 4500 rpm, the V8 delivers 50 more hp and 100 lb-ft of additional torque compared with the X5's naturally aspirated 4.8-liter V8. That's enough power to launch the X6 from 0 to 60 mph in just 5.3 seconds--faster than a 650i automatic--while giving it a top speed limited to 150 mph and a claimed combined fuel economy of 22 mpg.

http://www.autoweek.com/apps/pbcs.dl...1581/1008/FREE

of course still doesn't tell us if this was for US version or export version.
Thanks for the additional info.I'm still looking for the BMW Marketing piece.No luck yet.Thanks. PalBay
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      08-12-2008, 01:23 PM   #13
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Quote:
Originally Posted by dmlgc View Post
Palbay,
Autoweek had this piece which has 22 mpg combined, implies the estimate came from BMW ( claimed).

Producing 400 hp at 5500 rpm along with 450 lb-ft of torque between 1800 rpm and 4500 rpm, the V8 delivers 50 more hp and 100 lb-ft of additional torque compared with the X5's naturally aspirated 4.8-liter V8. That's enough power to launch the X6 from 0 to 60 mph in just 5.3 seconds--faster than a 650i automatic--while giving it a top speed limited to 150 mph and a claimed combined fuel economy of 22 mpg.

http://www.autoweek.com/apps/pbcs.dl...1581/1008/FREE

of course still doesn't tell us if this was for US version or export version.
My guess is 17.6 (18) MPG HWY U.S. which is 22MPG imperial gallons.

Remember imperial gallons are 20% higher.

I would say the facts are wrong out there. It is quite common to have the wrong info in the automotive press.

Common sense suggests even with Batman and Robbin tuning kit, no way the truck would get 18 mixed, let alone 22.
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      08-12-2008, 01:56 PM   #14
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Quote:
Originally Posted by chuck92103 View Post
My guess is 17.6 (18) MPG HWY U.S. which is 22MPG imperial gallons.

Remember imperial gallons are 20% higher.

I would say the facts are wrong out there. It is quite common to have the wrong info in the automotive press.

Common sense suggests even with Batman and Robbin tuning kit, no way the truck would get 18 mixed, let alone 22.
Well, all I can say is I just drove my xDrive50i home from Spartanburg and got an indicated 20.8 mpg on the highway! I haven't done much city driving yet, so I will keep you posted. BTW, my dealer's service rep says the computer is "pretty accurate" even though BMWs overestimate speed up to 100 mph, then underestimate 100+ (so that 100 mph is dead on). Can anybody else verify this? Cheers! Ad
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      08-12-2008, 03:08 PM   #15
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Originally Posted by autodahn View Post
Well, all I can say is I just drove my xDrive50i home from Spartanburg and got an indicated 20.8 mpg on the highway! I haven't done much city driving yet, so I will keep you posted. BTW, my dealer's service rep says the computer is "pretty accurate" even though BMWs overestimate speed up to 100 mph, then underestimate 100+ (so that 100 mph is dead on). Can anybody else verify this? Cheers! Ad
Thanks for the MPG update....Maybe... just maybe... that TTV8 has few more MPG's hidden in those twin turbo's somewhere.I hope for everyone's sake...it will surprise us all to the upside! Thanks. PalBay
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      08-12-2008, 04:22 PM   #16
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Quote:
Originally Posted by autodahn View Post
Well, all I can say is I just drove my xDrive50i home from Spartanburg and got an indicated 20.8 mpg on the highway! I haven't done much city driving yet, so I will keep you posted. BTW, my dealer's service rep says the computer is "pretty accurate" even though BMWs overestimate speed up to 100 mph, then underestimate 100+ (so that 100 mph is dead on). Can anybody else verify this? Cheers! Ad
How did you measure 20.8?

I have found dividing gallons used by miles driven the best way to measure. The onbaord computer on the gauge display is fairly accurate. The trip computer one can be 3-5 miles on the high side.
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      08-12-2008, 04:23 PM   #17
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Quote:
Originally Posted by autodahn View Post
Well, all I can say is I just drove my xDrive50i home from Spartanburg and got an indicated 20.8 mpg on the highway! I haven't done much city driving yet, so I will keep you posted. BTW, my dealer's service rep says the computer is "pretty accurate" even though BMWs overestimate speed up to 100 mph, then underestimate 100+ (so that 100 mph is dead on). Can anybody else verify this? Cheers! Ad
BMWs have always had optimistic speedometers, although being accurate at 100 MPH is new to me. Their consumption figures are usually pretty accurate as they measure fuel usage from the amounts that get injected -- obviously the computer knows that number very precisely -- and their odometers are generally much more accurate than their speedometers.

'Chipping' the turbo'd engines will make the computer MPG readings inaccurate as the ECU is fooled into injecting more fuel than it thinks it is doing. So you will get optimistic MPG readings if you go that route.
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      08-12-2008, 04:54 PM   #18
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Quote:
Originally Posted by chuck92103 View Post
How did you measure 20.8?

I have found dividing gallons used by miles driven the best way to measure. The onbaord computer on the gauge display is fairly accurate. The trip computer one can be 3-5 miles on the high side.
Unfortunately there is no familiar mpg gauge in the cluster, so I went only by the BC display. I will certainly check it out the old fashioned way, soon. However, this car is phenomenal, I will continue to feed it what ever it wants in return for the pleasure it gives in return. Sounds a lot like an addiction, no?
Cheers! ad
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      08-12-2008, 04:58 PM   #19
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Quote:
Originally Posted by Suzie's Dad View Post
BMWs have always had optimistic speedometers, although being accurate at 100 MPH is new to me. Their consumption figures are usually pretty accurate as they measure fuel usage from the amounts that get injected -- obviously the computer knows that number very precisely -- and their odometers are generally much more accurate than their speedometers.

'Chipping' the turbo'd engines will make the computer MPG readings inaccurate as the ECU is fooled into injecting more fuel than it thinks it is doing. So you will get optimistic MPG readings if you go that route.
Thanks for the info. I'm enjoying the engine too much to contemplate chipping, unless of course you mean the kind you do after driving it to a Mexican food place!
Cheers! ad
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      08-12-2008, 05:03 PM   #20
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Quote:
Originally Posted by Palbay View Post
Thanks for the MPG update....Maybe... just maybe... that TTV8 has few more MPG's hidden in those twin turbo's somewhere.I hope for everyone's sake...it will surprise us all to the upside! Thanks. PalBay
You have to Believe! BTW, thanks for the factory expansion photos on the other thread. When we were there Friday, i was almost distracted from the delivery presentation to watch the cranes placing those uprights.
Cheers! ad
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      08-16-2008, 06:54 AM   #21
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I see the results of the ring test have been published.

BMW X6 xDrive50i put in a best lap of 8min 54.4 seconds, but the Cayenne GTS was left crawling behind beyond the 9 minute barrier and more than 7 seconds a drift with a time of 9 mins 1.9 seconds.
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      08-16-2008, 02:05 PM   #22
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Quote:
Originally Posted by autodahn View Post
Well, all I can say is I just drove my xDrive50i home from Spartanburg and got an indicated 20.8 mpg on the highway! I haven't done much city driving yet, so I will keep you posted. BTW, my dealer's service rep says the computer is "pretty accurate" even though BMWs overestimate speed up to 100 mph, then underestimate 100+ (so that 100 mph is dead on). Can anybody else verify this? Cheers! Ad
my GPS Novus Rider is within 2 MPH throughout the range on my 635DS.
So very lose to dead accurate speedo readings. The MPG computer is also very accurate within 2MPG on brimming the tank and compareing MPG.
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