Okay, here is an interesting debate. Which one is quicker in stock standard form; the 306 GTi6 or the 206 GTi 180? I have seen 0-100 figures with the 180 I think being like 0.5s quicker. The GTi6 has 167bhp, the 180, 180bhp. However, I have spoken to people who have driven both and would say that the GTi6 is quicker.
Also, would one say that the centre of gravity on a GTi6 is lower than the 180? Looks like a wider wheel base on the GTi6, but I could be mistaken.