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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 10-26-2012, 03:49 AM
x5x5 x5x5 is offline
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Smile 13 X5 xDrive35i Acceleration Performance

So I have a new X5 and wanted to know whats options may exist for smoothing out the power delivery?

For example, I'm not looking for a race car as I drive pretty mellow, but I do find that when accelerating from a stop, the power delivery isn't as smooth and linear as I had hoped. There's a bit of a lag (common on the X5?) and a bit of a jerky/hit when accelerating up to speed..Again, not a lead foot, but the RPM's seem to shoot from 2K to 4K and it's just not very smooth and progressive if this make any sense.The car can accelerate when the turbo kicks in, but I guess I'm seeking less of a turbo effect...BTW: At what RPM does turbo kick in?...Is this what provides that rush of acceleration sensation - bit of a hold on effect?

So is this performance merely characteristic of the X5 and I just have to accept it?

BTW: nice vehicle. Love some of the telematics and of course, why we all buy BMWs - the driving experience.

Thanks in advance...Sorry, but I'm new to the X5 world, so please excuse any naive-ness in my post.
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  #2  
Old 10-26-2012, 09:40 AM
Kar Don Kar Don is offline
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Mein Auto: E70 & F04
Yes unfortunately the new X5 35i equipped with the new 8 spd auto trans exhibit acceleration delay from a stand still.
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  #3  
Old 10-26-2012, 10:15 AM
bxmxwx bxmxwx is offline
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Quote:
Originally Posted by Kar Don View Post
Yes unfortunately the new X5 35i equipped with the new 8 spd auto trans exhibit acceleration delay from a stand still.
I have a 2013 35i and I do not see much of this delay or jerkiness... Press soft it goes soft, press harder it goes faster, just like it should. Drove a couple loaners 3 and 5 series sedans and every time missed my X5 for, well, everything it got.
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  #4  
Old 10-27-2012, 06:39 PM
mgarciah mgarciah is offline
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Mein Auto: 320i, X3 and X5
On mine I kick the throttle pedal a bit and then pressed all the way, I can get a faster respond, dont know why but I did it that way on my Nissan Murano and worked.
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  #5  
Old 10-27-2012, 10:12 PM
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chiefneil chiefneil is offline
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I haven't noticed what the OP is talking about (I have a 2012 3.5i). But the X5 starts off in 2nd gear under normal conditions. It's possible he's starting off slow, then giving it more gas which causes a downshift to 1st which in turn causes high enough rpm to hit the turbo's power band, hence a surge.

Try starting off in sport mode and see if that smooths things out. My X5 definitely steps off more smartly from a stop when in sport mode.
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  #6  
Old 11-02-2012, 11:50 AM
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Kzang Kzang is online now
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Mein Auto: 2013 X5 35i Premium
Quote:
Originally Posted by bxmxwx View Post
I have a 2013 35i and I do not see much of this delay or jerkiness... Press soft it goes soft, press harder it goes faster, just like it should. Drove a couple loaners 3 and 5 series sedans and every time missed my X5 for, well, everything it got.
+1 no lag or hesitation... Maybe..get your car checked out for a transmission reset from the dealer or do it yourself.
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  #7  
Old 11-02-2012, 03:29 PM
SkipSauls SkipSauls is offline
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Mein Auto: 2011 X5 xDrive35d
Here's a link to a thread with information on the transmission reset:

http://www.bimmerfest.com/forums/sho...d.php?t=261285

This works on my 35d, but over time it will "learn" to be less responsive and need to be reset again. BMW needs to rethink the algorithm or something, as people want a responsive throttle without having to mash it hard or drive like a maniac to keep it from adapting. A setting in iDrive to turn off the "smarts" for stuff like this would be nice.
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  #8  
Old 11-02-2012, 05:35 PM
macming macming is offline
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Have you tried sports mode? The engine and tranny are less laggy in sports mode.
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