I've never been in a smart fortwo, Toyota iQ, or even a Fiat 500. I like the fact that Mirage is larger, & the 5-speed manual still gets better mpg.
Someone once shared a pic of the Mirage stretched into a small wagon. I liked that better! It reminded me of my first car (1978 Honda Civic Wagon, 63 hp), except a Mirage wagon would have more hp and get better mpg!
I remember the 1978 Honda Civic Wagon still had a hand choke on the dash.