Compared to our Revo diesel, I find the IPV doesn't really have much of an advantage in terms of power. Acceleration seemed more or less the same, top speed was the same too. 140-145 on the flatlands and around 150 if somewhat downhill. It was much quieter than the Revo at high speed, with only a rather unobtrusive high pitched whine at 140 as compared to the Revo which sounded like a plane engine about to explode. I do wonder if it's the D-Max's excellent sound insulation or a much quieter engine overall.