I have one of these, May 2004, one of the first and I have never been impressed with the settings controling the gear changes. For such a torquey engine it holds the lower gears much too long often making it feeling undergeared. I have asked the local dealer a number of times if there is a reprogram available but they don't seem to know what I am talking about!
The car was in recently for attention to another (engine) fault and I was loaned a 525i. Its speeds for change (up or down) bore no relation to my car. I use mine very often in 'manual' just to get into higher gears but this other car was fine and when I tried it in manual it was much slower to drop to a lower gear.
Fuel economy is poor for a diesel, it gets the same to the gallon as my previous petrol A6.
Anyone any info?
Thanks
Syd