We have both i20 Crdi (six speed) and GP 76 HP ( my babe) in our family. Agree here that i20 Diesel hardly sounds like an oil burner! I had taken it once to 160+ on expressway and it still had quite some breath left in it. The acceleration in the i20 is just fantastic! Overtaking is fun! But due to its wallowy nature of ride and almost dead steering I feel the i20 is better off cruising at 110-120km/h on our highways in the sixth gear (on open roads). So far I have got only one chance to take my Punto on expressway to Mumbai. I could quite easily touch 130 km/h but since the car had only 1500km on the odo back then, I tried not to go beyond 130. But the composure of Punto was excellent. I was much more relaxed in GP than in the i20 and therefore could enjoy the drive more. Ofcourse the mighty 90 (HP) will be better here!