X5 E53 (1999 - 2006)
I have begin to notice when driving the X5 (3.0i auto, 90,000 mi.) that when I engage the gas pedal there is a slight lack of acceleration, The car feels heavy up to 2500 - 3000 RPM.
Some days the car feels really powerful as soon I engage gas it jumps with a lot of power. The difference is that...