More commentary from Press Junket
See the following link for some info from the official Press Preview for the Mazda3:
http://www.autonews.com/article.cms?articleId=45294
Specifically, this quote at the end of the article points out the most significant difference, at least visually, between P5 and M3:
"The Mazda3 five-door is 2 inches longer and wider, and 2.2 inches taller than the Protege5, while the four-door is 2.9 inches longer than the Protege."
And:...
"That makes both cars roomier than their predecessors, but the space comes with a weight penalty - the five-door weighs 110 pounds more than the Protege5, and the four-door is 128 pounds heavier than the Protege."
Earlier in the article Hideki Suzuki, the chief designer for the new 3, stated that the 3 was designed to "convey a sense of being 'athletic and energetic.' But more elegance was drawn into the four-door, he said, while the five-door was given a more rugged appearance." Don't want to get into how I would know this, but "rugged" is an obvious translation from Japanese for a concept that is not related to SUVs so much as it's related to a sense of strength. M3 5dr. was designed to be a more masculine car, hence the fender blisters, 17" wheels and bold pillars in the greenhouse... especially with the increase in size, I fully expect the M3 to have a more substantial presence on the road.
As for the increase in weight, that's unfortunate but, then again, we're talking an increase (on the 5dr.) of 30hp with a significantly larger engine that will likely see alot of development for Speed World Challenge... I'll take that.
Even if the ride/handling is skewed slightly more towards refinement, I expect that it'll still be significantly more enthusiast-oriented than it's competition. Given that so many of the P5s in this forum of true believers have had some modifications in wheel/tire and suspension, I think it's acceptable to tweak the suspension tune towards a more resilient ride... as long as it's still performance oriented. We'll see when I finally get into it.