The Truth About Cars did a review of a European-Spec Mazda2, equipped with the same 1.5-liter SkyActiv engine the iA will be getting, giving their feedback on performance:
full review: http://www.thetruthaboutcars.com/2015/05/2016-mazda2-european-review/Let’s start with the engine first. As I already mentioned, my press loaner was powered with the least powerful, least sophisticated version of the 1.5 SkyActive four-cylinder. It lacks the trick 4-2-1 headers, crazy compression ratio and – on paper – it looks seriously underpowered. Compared to both superminis I drove before and after the Mazda2 (the aforementioned Fabia 1.2 TSI and Corsa 1.0 Turbo), its 75 hp seems almost like a joke.
Trust me, it isn’t. Having driven a few cars with N/A engines neutered by EU5 emission standards lately, I started to think that turbocharging is the only remaining way to go. Mazda proved me (and probably many others) wrong. There is nothing neutered about this engine. Thanks to its large displacement (for a base engine in an EU-market supermini), it’s not lacking torque in the low range, and it somehow keeps the rev-happy characteristics of a classic Japanese four-pot. I’ve never been a great fan of revvy four-cylinders and I actually like the diesel version of Mazda6 more than the gasoline one, but the four-banger in the Mazda2 is a delight. I found myself revving it right to the redline just for fun and, of course, sometimes out of necessity because 75 hp isn’t really much. That’s not to say the 2 is unbearably slow. On the contrary, it was much quicker than I expected and at normal pace it was perfectly fine. I was surprised by its ability to overtake at A-road speeds (around 60-65 mph in CZ), as well as its relative stability and bearability near the top speed of about 110 mph.