I'm seeing some new Sparks around my small city -- far more than I ever saw of the previous version.
I've read many of the reviews of the new model, and they all sum it up as a quieter, more refined driving experience than the Mirage or Micra. But it is considerably smaller than they are (4 passenger vs. 5).
Our city got its first Nissan dealership just this spring, and I still haven't seen any new Micras on the roads around here, despite it outselling both the Spark AND the Mirage (combined!) in Canada.
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View my fuel log 2014 Mirage ES 1.2 manual: 62.4 mpg (US) ... 26.5 km/L ... 3.8 L/100 km ... 74.9 mpg (Imp)