its noticably fast I don't really floor it but on onramps etc its wonderful. It feels really fast to me but I don't really "race it" as for the engine strain, its more powerful then any X5 on the market today and the navi is better as for the high center feel, its because Its MUCH higher then the X5 and once your used to it its fine, its not as much of a drivers car as an X5 but its much more of a luxury rider then the X5

__________________
The Present:
2014 Audi Q5 TDI Prestige
The Past:
2013 Lexus GS350
2013 VW Golf TDI
2007 BMW X5 4.8i LOADED & Loved
2009 VW Jetta
2008 VW Touareg VR6
2005 BMW X5 3.0i
2005 BMW Z4 3.0i
2004 BMW X5 3.0i
2003 BMW 325i
2000 Ford Explorer Eddie Bauer 4x4