I like Iveco, I have powered 2 new boats with Iveco's, they both performed great, were light weight, smooth, quiet, powerful, etc. Iveco doesn't have the presence on the west coast that it does on the east, hopefully in the near future it does, I think they are working on it as we speak. And once they have a stronger presence in the NW and Alaska, they are going to be a hot ticket. But I have been offered a good deal on a new Volvo D9 500hp for a new spec boat I am starting on this summer, so was just looking for opinions on the D9. I have already put down a deposit on the D9. I figured Volvo has been building them for about 10 years now, they should be a pretty good engine. And since the boat is 40', a little extra bulky engine is actually a plus in my book, it displaces 9.4 liters. Volvo also has good service available in Alaska, so that's another plus. And Volvo's seem to be popular in the NW/Alaska.
I think each manufacturer has pro's and con's in each displacement/HP category and in their ability to service the customer. I think Iveco has got the competition beat big time with their 6.7 liter engine. Their 9 liter is in competition with a very good 9 liter John Deere, a good 8.3 Cummins, and the Volvo D9. Their C13 is also competing with a good 13.5L Deere, 13L Volvo, and Scania. So I guess there a lot of things to consider before saying 1 engine is better than the other, or 1 is preferable over the other.