When I was shopping for my new DD I drove the Fiesta SE 5DR with the 1.0 Ecoboost.
The Fiesta's acceleration was pretty impressive while getting on the FWY with three guys in the car. The tiny turbo was doing a good job. At idle the engine shakes a bit and the DI makes it sounds like a diesel but, I was impressed with the power, acceleration, and estimated MPG.
Cool little engine, but, it was the rest of the car that lead me to the 2.
Even though the 2 is underpowered, I preferred the appearance, aesthetics, and overall quality of the Mazda.
Mike