Hi Bangso30,
I noticed it as well.
I bought a new 1.6 crdi Cee'din October 2009 and within hours after taking it out the showroom had noticed the same, or similarproblem you describe.
The problem seems to occur if say you approach a roundabout or junction in to high a gear then the car will not slow down as you would like it too, i.e if you approach in third the car wants to do 30mph not less as you would like. There is a mini roundaboutI use on my way home everyday where I take the second turning off (270 degrees) and if I approach in third gear, as I would in any other car normally, I find that I feel like I'm racing round the roundabout without any acceleration- in fact I am doing about 30mph even if I entered the roundabout at less speed. It car goes against my natural driving habits. If I approach the same roundabout in second gear all is fine and I feel more in control because I do have more control. But as you say, its also a problem in other gears. I would have thought it was just a case of updating the software?
It could be dangerous. One incident occurred lastJanuary I think. It was about 8pm that they forecast heavy snow and I was about 8 miles away at my partners house. Sure enough about that time it began to snow heavy and was pitching as fast as it came down. I made my way home but had to negotiate a long down hill stretch. The road was iced over where cars had driven over the fresh snow and as I approched the crest of the hill in third (30mph no acceleration) I could see in the immediate distance that traffic was more or less crawling along down the hill wher it was so slippery. I knew I had to change down from 3rd gear which I did but the gearbox at that speed acted like a brake (which is another problem)and so I began to slide on a bend taking me across the centre lane. Naturally you brake when something like that happens and the wheels then locked up making matters worse (abs came in). I realise that the best for me to do was to release the brake to try to regain steering control. I think I eventually put her in neutral and used light pressure to the brakes to slow down? i don't know but I feel very lucky to have come out of that without an accident of sorts. It was a scary moment when things happened so quickly ,In short it was like downhill racing on an ice rink,but I don't believe this would have happened if I had more control over the vehicle as opposed to the computer tying to take me to a speed that I didn't want to go.
I doubt if I'll go out in the snow next time!!
Regard mike.