Good pic wozzaa.
dunganick - looking at the Ibiza picture it looks sharp around the door handle, just looks a little back focused. Same with the second one, it looks a bit soft but sharp where it says red fox, could be poor light or just the lens being shot at maximum aperture. You could try stopping the lens down to around f/6.3 or f/7.1 for more depth and increase the sharpness of the lens (if light permits).
You could also give Custom function 04 a chance (its 4 on my 350D) and move the focus button to the * on the back and see if that works better for you..
I think only a faster focusing lens can help in this case, maybe keep an eye out for second hand 70-200 f4 L's or 70-300 IS's....