Does the Corsa really have the Mutltijet2 engine though? I doubt it because this is only now being rolled out in Fiats. I'll guess it has the 95 hp current 1.3, especially as Fiat has said it is being very hedgy about letting competitors use its new technology this time.
Interestingly the new Doblo, which is coming in January, has a 95 Diesel 1.3 as well, but I suspect it isn't Multijet2 either as no mention of this has been made in the blurb - and it would be, also it is only Euro4 compliant, which means it isn't as clean as it might be. Again, I expect this is because they can't switch overnight to the latest technology for all engines, and also perhaps there is a cost issue on what are supposed to be cheap cars.
I'd like to know the real reason for these various engine choices, especially with Fiat's intent to apply the new technology to everything as soon as possible.