My driving of new Mazda3's has been limited to two of the far cheaper 2.0l 6MT models going for about $21 grand, and made in Japan. The latest ones are assembled in Mexico and there have been quality lapses rumoured, mostly transportation damage. It's a brand new factory.
$21K is one thing - the car drives very well indeed. But this one costs $29,000 plus shipping (the pricing in the article does not add up). The cost to Mazda for the 2.5l over the 2.0l engine must be about $50 for the extra aluminum in the slightly taller block casting. And that's about it. It's not all that much quicker, and the base 6 costs less with the bigger engine included and still made in Japan.
Surely for $29K plus shipping, this 3 is way overpriced. A reasonable price would be $22K for one with far fewer options and the bigger engine. If you want go power, and can tolerate the VW salesman's rudeness for even asking about the cheapy GTI 2 door for $29K with non-boring paint, it's a much, much quicker choice. And quieter with similar fuel consumption.