The Fiesta and Mazda 2 are the same car under the skin, the Buick Regal, considered small in N.A. is sold as a Large, Luxury, Opel in Germany.
As far as Horsepower goes, for a while I had a Citroen car with 2 cylinders, that put out all of 37 HP when new.
I would ( will ) probably buy one of the various planned 3 wheeled electric 2 person tadpole trike electric vehicles, when the battery ( Ultracap ) technology becomes reality.