As the demographic of UK jazz owners is somewhat senior I sometimes wonder how many of them have experienced the effects of I-VTEC. I remember many years ago reading a Ford report saying that the average UK driver rarely used more than a low percentage of their engines total power output. I can't remember the exact figure but 40% rings a bell. This may have changed due to modern traffic speeds but does not surprise me. A couple of my bus pass carrying friends own Jazzes, I doubt if they have ever exceeded 3,000 rpm and would not understand what I-VTEC is even if explained to them, one thinks she has a 1.6 Mk 3 Jazz (it's a 1.3) I have not disallusioned her.