[i]I did notice that the car was difficult to engage gears when cold. Gears need double clutching to shift. Gear shifts became normal after a couple of minutes of driving (2-3).
I'm not sure if the manuals are the same as the automatic transmissions, but the shifts between gears are lengthened in order to warm up the catalytic convertor so that emissions are held down. As the car warms up, the shifts smooth out and are no longer noticable.
My auto 190e does the same thing. Have to be gentle for about the first 5 minutes or so, and then it's fine. I have noticed that if I start it and wait for about 5 minutes before driving, the shift delay is much better.
Hope this helps-