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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 06-23-2012, 06:56 AM
BenF12400 BenF12400 is offline
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Question MPG in 2013 X5 3.5i premium

I picked up my X5 3.5i in Spartansburg/Greenville May 8, have driven about 3200 miles since - 90% highway. I reset the trip gauge and idrive trip info with each fillup of gas - MPG constantly reads 24.7, always says average speed about 42mph - is this a glitch?
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  #2  
Old 06-23-2012, 01:42 PM
E60 550i E60 550i is offline
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Quote:
Originally Posted by BenF12400 View Post
I picked up my X5 3.5i in Spartansburg/Greenville May 8, have driven about 3200 miles since - 90% highway. I reset the trip gauge and idrive trip info with each fillup of gas - MPG constantly reads 24.7, always says average speed about 42mph - is this a glitch?
MPG sounds way too good. Also, I have found great deviations in MPG depending on type of driving. Best have Dealer chech out.
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  #3  
Old 06-23-2012, 03:32 PM
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dcharnet dcharnet is offline
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Quote:
Originally Posted by BenF12400 View Post
I picked up my X5 3.5i in Spartansburg/Greenville May 8, have driven about 3200 miles since - 90% highway. I reset the trip gauge and idrive trip info with each fillup of gas - MPG constantly reads 24.7, always says average speed about 42mph - is this a glitch?
It sounds like you might not be resetting it properly. Try it also on the signal light stalk.
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  #4  
Old 06-24-2012, 12:40 PM
BenF12400 BenF12400 is offline
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I've reset it from all angles; I just drove 300 miles from NC to MD on a half-tank, so maybe it's getting reasonable MPG (this included driving through a major storm and multiple backups through Norfolk). I suspect if I bring it to the dealer they will laugh. When I fill the tank it usually estimates a cruising range of 550 to 600 miles and that seems to be accurate.
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  #5  
Old 06-24-2012, 01:27 PM
bfschroe bfschroe is offline
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I hope for your sake that it is correct but I am afraid that it is not.
I picked mine up at the Performance center on 5/30 and it did read a 500+ cruising range. It also showed an average speed that had to be incorrect (considering it had 2 miles on the odometer when I got it then I drove it home for 300 miles at 70+ and it showed an average speed in the 40s. Was more realistic after reset. Mileage is as expected (17 ish city and maybe 20 highway (using 89 grade).

Bruce
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  #6  
Old 06-25-2012, 07:49 AM
mx22 mx22 is offline
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Why would you even put 89 fuel in the car when it says that min to use is 91. It's your car and your choice and I'm not here to say you should not do it, but if anything happens, BMW will quickly blame everything on you and will void warranty...
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  #7  
Old 06-25-2012, 08:01 AM
bfschroe bfschroe is offline
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I wouldn't put 89 in a car that recommends 91. The 2013s recommend 89.
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  #8  
Old 06-25-2012, 08:39 AM
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chiefneil chiefneil is offline
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24mpg average sounds really good. But then I'm a lead-foot on the highway.

A slightly unrelated question - has anyone noticed that the first indicated 1/4 tank of gas goes down really, really fast? On a 5-hour drive my first 1/4 tank will disappear in 30-40 minutes, then the next 1/2 tank will last about 3+ hours. All under the same driving conditions (highway). It's been weird like that in the 12 months I've had this X5 3.5i.

Last edited by chiefneil; 06-25-2012 at 08:42 AM.
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  #9  
Old 06-25-2012, 10:09 AM
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Kzang Kzang is offline
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Quote:
Originally Posted by mx22 View Post
Why would you even put 89 fuel in the car when it says that min to use is 91. It's your car and your choice and I'm not here to say you should not do it, but if anything happens, BMW will quickly blame everything on you and will void warranty...
The minimum is 87 AKI for X5 and recommend fuel is 91 AKI

Per 2011 X5 manual

Quote:
Super Premium Gasoline/AKI 91
This gasoline is highly recommended.
However, you may also use gasoline with less
AKI. The minimum AKI Rating is:
***9655; BMW X5: 87
***9655; BMW X6: 89
If you use gasoline with this minimum AKI Rating,
the engine may produce knocking sounds
when starting at high outside temperatures.
This has no affect on the engine life.
Minimum fuel grade
Do not use any gasoline below the minimum
specified fuel grade; otherwise, engine
damage may occur.***9664;
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Last edited by Kzang; 06-25-2012 at 10:10 AM.
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  #10  
Old 06-25-2012, 11:19 AM
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serge1 serge1 is offline
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Quote:
Originally Posted by chiefneil View Post
A slightly unrelated question - has anyone noticed that the first indicated 1/4 tank of gas goes down really, really fast? On a 5-hour drive my first 1/4 tank will disappear in 30-40 minutes, then the next 1/2 tank will last about 3+ hours. All under the same driving conditions (highway). It's been weird like that in the 12 months I've had this X5 3.5i.
I have found my 35d having the most accurate reading when it comes to estimating.
On most cars the first half of tank the arrow would move really slow, and then drop. That's why at first, on my 35d, I felt like the arrow moves too fast at the beginning (since I got used to how it is in other cars). But it's actually pretty accurate. On a recent highway trip, the arrow landed in "1/2" at exactly 305 miles on the trip odometer, which is half a tank. I was pretty cofident that I would have driven another 305 miles untill empty in same conditions.

Last edited by serge1; 06-25-2012 at 11:55 AM.
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  #11  
Old 06-25-2012, 11:31 AM
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Quote:
Originally Posted by chiefneil View Post
24mpg average sounds really good. But then I'm a lead-foot on the highway.

A slightly unrelated question - has anyone noticed that the first indicated 1/4 tank of gas goes down really, really fast? On a 5-hour drive my first 1/4 tank will disappear in 30-40 minutes, then the next 1/2 tank will last about 3+ hours. All under the same driving conditions (highway). It's been weird like that in the 12 months I've had this X5 3.5i.
I noticed this as well and I am not certain that it is a BMW thing.. My previous car 2010 535i didn't do this.. actually it was pretty equal as far as fuel indication for each quarter.

At first I thought maybe I need to wait until the break in period is over... right now I'm at 2,000 miles on the odo and my gas consumption seem better than the last time I filled up.
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  #12  
Old 06-25-2012, 11:32 AM
kankou kankou is offline
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Quote:
Originally Posted by bfschroe View Post
I wouldn't put 89 in a car that recommends 91. The 2013s recommend 89.
pg 264 of the 2013 manual says 91AKI is recommended [with 89 AKI being the minimum].
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  #13  
Old 06-25-2012, 01:29 PM
bxmxwx bxmxwx is offline
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On my X5 the fuel gauge is very consistent. I get about 21mpg combined (surburbs, not really heavy city traffic) and 24.5 on the highway. I even noticed that there are exactly 20 ticks on the fuel tank guage with about 20 gallons (a bit more) capacity, and the estimation of number of ticks used times 20 mpg gets very close to the dashboard trip odometer that I reset after each refueling, literally within a few miles.

My previous car (Honda) had the same issue many refer to, though - the first half of tank would go very slowly making you feel like you are getting great mileage, but then drop fast. My simple guess is that the shape of the tank is such that it narrows in cross-section closer to the bottom, while the sensor is linear and measures depth. So when the sensor shows half depth, you really have less than half volume.
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  #14  
Old 06-25-2012, 08:36 PM
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Quote:
Originally Posted by kankou View Post
pg 264 of the 2013 manual says 91AKI is recommended [with 89 AKI being the minimum].
That's what I thought as well, but to be honest - I never opened my manual looking for that bit of info. However, every time I go to fill car up, I see a small decal that says a minimum of 91 is recommended...
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  #15  
Old 06-26-2012, 04:09 AM
pony_trekker pony_trekker is online now
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Quote:
Originally Posted by chiefneil View Post
24mpg average sounds really good. But then I'm a lead-foot on the highway.

A slightly unrelated question - has anyone noticed that the first indicated 1/4 tank of gas goes down really, really fast? On a 5-hour drive my first 1/4 tank will disappear in 30-40 minutes, then the next 1/2 tank will last about 3+ hours. All under the same driving conditions (highway). It's been weird like that in the 12 months I've had this X5 3.5i.
Got 28 in an Avis X5 Rental, NYC-Syracuse
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  #16  
Old 06-26-2012, 05:52 AM
BenF12400 BenF12400 is offline
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OK - I figured out what I was doing wrong - even though I reset the trip gauge by pushing the black button on the speedometer screen and resetting the trip gauge on the screen via the idrive, I was not holding in the button on the stem on the turn signal while scrolling through the mpg, etc - to get the mpg erased. I'm now seeing 25 plus mpg with realistic average speeds being indicated - premium fuel only!
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  #17  
Old 06-27-2012, 06:53 PM
bfschroe bfschroe is offline
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Sorry if I was misinformed a bit. I used minimum and recommended interchangeably. I never looked at the manual but was told by the detailer at delivery that they have made a change in 2013 and it only needs 89 vs 91 in the past. From the manual excerpt posted here it seems that using the minimum does not violate any terms of the warranty and from what it says, it primary value is to prevent knocking. I understand there may be a bump in fuel economy but not sure if that offsets the cost (not that the 3% difference in price is significant). Any other reason to use 91?

Bruce
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  #18  
Old 06-28-2012, 04:52 AM
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AutoUnion AutoUnion is offline
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Got 28 in an Avis X5 Rental, NYC-Syracuse
Avis rents out X5s now?
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  #19  
Old 06-28-2012, 05:59 PM
pony_trekker pony_trekker is online now
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Avis rents out X5s now?
Westchester Airport had it once.
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  #20  
Old 06-28-2012, 09:10 PM
Kar Don Kar Don is offline
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Avis rents out X5s now?
so does Hertz, got one at LAX
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  #21  
Old 06-29-2012, 05:54 AM
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Quote:
Originally Posted by bfschroe View Post
Sorry if I was misinformed a bit. I used minimum and recommended interchangeably. I never looked at the manual but was told by the detailer at delivery that they have made a change in 2013 and it only needs 89 vs 91 in the past. From the manual excerpt posted here it seems that using the minimum does not violate any terms of the warranty and from what it says, it primary value is to prevent knocking. I understand there may be a bump in fuel economy but not sure if that offsets the cost (not that the 3% difference in price is significant). Any other reason to use 91?

Bruce
There will be a difference in power and torque; maybe 5%. Mainly, it will be unnoticeable, or irrelevant, unlike, say, in a racecar. There is a choice.
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  #22  
Old 06-29-2012, 09:21 AM
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Kzang Kzang is offline
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One of the reasons to use 91 octane is for better fuel economy...
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  #23  
Old 06-29-2012, 09:14 PM
Lightjak Lightjak is offline
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Originally Posted by BenF12400 View Post
OK - I figured out what I was doing wrong - even though I reset the trip gauge by pushing the black button on the speedometer screen and resetting the trip gauge on the screen via the idrive, I was not holding in the button on the stem on the turn signal while scrolling through the mpg, etc - to get the mpg erased. I'm now seeing 25 plus mpg with realistic average speeds being indicated - premium fuel only!
Thank you.
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  #24  
Old 06-30-2012, 05:38 PM
E60 550i E60 550i is offline
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Quote:
Originally Posted by bxmxwx View Post
On my X5 the fuel gauge is very consistent. I get about 21mpg combined (surburbs, not really heavy city traffic) and 24.5 on the highway. I even noticed that there are exactly 20 ticks on the fuel tank guage with about 20 gallons (a bit more) capacity, and the estimation of number of ticks used times 20 mpg gets very close to the dashboard trip odometer that I reset after each refueling, literally within a few miles.

My previous car (Honda) had the same issue many refer to, though - the first half of tank would go very slowly making you feel like you are getting great mileage, but then drop fast. My simple guess is that the shape of the tank is such that it narrows in cross-section closer to the bottom, while the sensor is linear and measures depth. So when the sensor shows half depth, you really have less than half volume.
I would like to get similar mileage. I am averaging about 14.5 mpg on mixed driving. I bought the car early in model year and EPA rating was 25 mpg. I was very surprised that my 550 averag;es about 20 mpg in the same type driving. In retrospect, I wished I would have ordered the 4.4 turbo in the X5.
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2011 X5 xDrive 35i Sport Activity, Black Sapphire, Black Nappa, Convenience Pkg. M Sport Pkg, Technology Pkg. Comfort Access, Satellite Radio, Premium hi-fi system, Delivery on 5/26/10

Previous BMWs
2006 550i
2001 330cic
2003 745Li
2000 M5
2000 540i
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